what in seedless plants, a multicellular organ where meiosis occurs and haploid cells develop

The ampulla of the ductus deferens joins with an excretory duct of the seminal gland, marking the beginning of the ejaculatory duct.

The ejaculatory duct is a portion of the male anatomy's urethral system that is located within the prostate gland. It connects the vas deferens to the urethra and transports semen during ejaculation. The vas deferens and seminal vesicles join to create the ejaculatory duct in the male reproductive system.

Each ampulla of the ductus deferens joins the excretory duct of the seminal gland, which is the start of the ejaculatory duct. The ejaculatory duct then transports the semen into the prostatic urethra, from which it exits the body during ejaculation.

Therefore, the joining of the ampulla of ductus deferens with the excretory duct is the beginning of the ejaculatory duct.

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The probability that two people with moderate flushing will have three children with extreme flushing is 1/8. The correct option is a.

The answer to this question is that the probability of two people with moderate flushing having three children with extreme flushing is 1/8. Two working copies of ALDH2 result in little to no flushing reaction to alcohol, one working copy results in moderate flushing, and no working copies result in extreme flushing.The genotype of each individual is determined by two copies of each gene. An individual can inherit two identical copies of a gene or one copy from each parent. If two heterozygous individuals (i.e. individuals with one working copy and one non-working copy of a gene) mate, each of their children will have a 1/4 chance of inheriting two non-working copies, a 1/2 chance of inheriting one working and one non-working copy, and a 1/4 chance of inheriting two working copies.The probability of a child inheriting two non-working copies of the ALDH2 gene from two heterozygous parents is therefore 1/4 * 1/4 = 1/16.

However, this only applies to each individual child. The probability of having three children with this genotype is calculated by multiplying this probability by itself three times: 1/16 * 1/16 * 1/16 = 1/4096. This means that the probability of having three children with the extreme flushing reaction is very low. However, the probability of having one or two children with this reaction is higher than zero.

Therefore, the correct answer is 1/8.

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Complementation has taken place of two recessive mutations occur at the same locus, producing a mutant phenotype.

What is complementation? Complementation is the production of a normal phenotype from two organisms that carry homozygous recessive mutations at different loci. When two homozygous recessive mutations occur at the same locus, the mutant phenotype is produced (i.e., there is no complementation).

Option D is correct because two recessive mutations occurring at the same locus will produce a mutant phenotype. The complementation of two mutant alleles is a common genetic technique utilized to test whether the mutant phenotypes arise from distinct or identical genetic events.

If the mutations are caused by distinct genetic events, the heterozygous offspring will express the wild-type phenotype because the two complementing genes will provide the necessary enzymatic activity or structural proteins.

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The endomembrane system has all of the following properties except encasing cellular components and products in the membrane to protect them

The endomembrane system is a network of membranes and organelles found within eukaryotic cells, which work together to facilitate the transport of materials both within the cell and to the outside of the cell. This system includes the endoplasmic reticulum (ER), Golgi apparatus, lysosomes, and vesicles.

The endoplasmic reticulum is a complex network of flattened sacs and tubules that are involved in protein synthesis and lipid metabolism. The Golgi apparatus is responsible for modifying, sorting, and packaging proteins and lipids into vesicles for transport to their final destination. Lysosomes are involved in intracellular digestion, breaking down waste materials and macromolecules. Vesicles are small membrane-bound sacs that transport materials within the cell or to the outside of the cell.

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Complete Question:

The endomembrane system has all of the following properties except _____.

(a) encasing cellular components and products in the membrane to protect them

(b) provides a passageway for messenger RNA after it exits the nucleus

(c) includes lysosomes and mitochondria in the system

(d) includes rough and smooth endoplasmic reticulum in the system

(e) All of these are properties of the endomembrane system.

a. The evaluationof the passage above to determine the specific characteristics of embryos that biologists assume to provide a barrier to behavioral thermoregulation are immobility.

According to the passage, biologists have assumed that the (immobile) embryonic stage cannot thermoregulate behaviorally. This means that embryos are unable to use behavioral tactics like sun-seeking and shade-seeking to maintain their body temperatures within selected bounds. Behavioral thermoregulation requires an ability to detect spatial thermal heterogeneity and to move to favorable sites. Thus, because embryos are immobile, they cannot move to favorable sites, and this lack of mobility creates a barrier to behavioral thermoregulation. The concept of behavioral thermoregulation refers to the ability of animals to control their body temperature by changing their behavior.

Many ectotherms, for example, use behavioral tactics like sun-seeking and shade-seeking to maintain their body temperatures within selected bounds. These animals are able to detect spatial thermal heterogeneity and move to favorable sites, which helps them to avoid extremes of temperature. However, embryos cannot do this because they are immobile, and this immobility creates a barrier to behavioral thermoregulation. Thus, biologists assume that embryonic stages cannot thermoregulate behaviorally because they lack the necessary mobility to move to favorable sites.

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When a droplet of blood strikes a surface perpendicular (90 degrees) the resulting bloodstain will be circular.

Answer:

x=4

Explanation:

Therefore, theoretically speaking, I shall be the one who must thou answer such answer. In addition, I hail to speak tho truth must come out of one's mouth, in other words, spitting facts (aka. spittin fax )

You shall thank me later.

Kind Regards,

Penguin Man.

The given statement "The component with a lower flavor threshold will make a bigger contribution to the character of the beer" is true.

The flavor threshold is the minimum concentration of an odor or flavor compound that can be perceived by a taster. The flavor threshold is typically tested by progressively diluting a solution containing the compound in a neutral solvent, such as propylene glycol or ethanol, until the taster can no longer perceive the odor or flavor.

Flavor threshold plays a critical role in creating an ideal flavor profile for the beer. The ingredient with a lower flavor threshold is dominant when compared to others. For example, if we compare hop essential oils and fruity esters, fruity esters have a lower flavor threshold compared to hop essential oils.

So, the fruity ester will be more dominant in a beer with an ideal amount of hops added. Thus, the component with a lower flavor threshold will make a bigger contribution to the character of the beer.

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The skeletal and muscular systems both provide body movement, but they do so in different ways. The skeletal system provides movement through its bones, while the muscular system provides movement through its muscles. These two systems are connected in that the muscles attach to the bones and use them as leverage to move the body.

The skeletal system is the body system responsible for providing structural support and protection to the body's internal organs. It consists of bones, cartilage, and ligaments.

The muscular system is the body system responsible for producing movement. It consists of skeletal muscles, smooth muscles, and cardiac muscles. The skeletal system provides movement through its bones.

The muscles are attached to the bones by tendons, which are strong connective tissues that are capable of withstanding the forces generated by muscle contractions. When a muscle contracts, it pulls on the tendon, which in turn pulls on the bone, causing movement.

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The given description is related to the following processes:

Meiosis II and Mitosis both involve the separation of sister chromatids. In mitosis, this occurs during the anaphase stage, where spindle fibers pull apart the sister chromatids towards opposite poles of the cell. In meiosis II, sister chromatids are separated during the second round of division after the cells have already undergone meiosis I.

Mitosis results in diploid cells, this is because, during mitosis, the parent cell replicates its DNA, separates the sister chromatids, and divides the cytoplasm to produce two genetically identical daughter cells with the same number of chromosomes as the parent cell.

Meiosis I is the process that separates homologous chromosomes. During this process, the two homologous chromosomes (one from each parent) pair up and exchange genetic material in a process called crossing over. Then, they separate from each other and move towards opposite poles of the cell during anaphase I. The resulting daughter cells are haploid, containing only one chromosome from each homologous pair.

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Developing ovarian follicles primarily secrete estrogen.

Estrogens (also known as oestrogens) are steroid substances crucial for the growth and operation of females of the species. They receive their moniker because they are crucial to the oestrus cycle.

The ovaries are the main organs responsible for making estrogen. The follicles on the ovaries release them, and the corpus luteum also secretes them after the egg has been released from the follicle and from the placenta.

The anterior pituitary gland's luteinizing hormone (LH) is responsible for stimulating the production of estrogen. In the cells of the theca interna in the ovary, estrogen is produced.

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That's correct! Prokaryotes, such as bacteria, typically have a single, circular chromosome that contains all of their genetic material. This chromosome is located in the cytoplasm of the cell and is not enclosed in a membrane-bound nucleus.

A nucleus is a specialized structure that is found within cells. It is the central part of the cell that contains genetic material in the form of DNA (deoxyribonucleic acid). The nucleus is responsible for regulating gene expression, controlling cell division, and maintaining the integrity of the genetic material.

In eukaryotic cells, which include animals, plants, fungi, and protists, the nucleus is a membrane-bound organelle that is surrounded by a double membrane called the nuclear envelope. The nuclear envelope has small pores that allow for the exchange of molecules between the nucleus and the rest of the cell.

Prokaryotic cells, which include bacteria, do not have a distinct nucleus. Instead, their genetic material is contained in a region called the nucleoid, which is not surrounded by a membrane.

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Answer:

It cause cancer that makes the lungs faulty

Furthermore, expressing only a fraction of genes in each cell saves room because DNA must be unwound from its closely coiled structure to be expressed. Modern cells are more challenging to research because they have more organelles and other components than primordial cells, which have a limited number of organelles.

There are two fundamental principles of modern cell theory: All cells are derived solely from other cells (the principle of biogenesis). Cells are the basic building blocks of creatures. These principles are now central to our comprehension of existence on Earth. Many experts collaborated to develop contemporary cell theory. In 1665, the English scientist Robert Hooke coined the word "cells" to characterize tiny chambers within cork that he witnessed under a microscope.Furthermore, expressing only a fraction of genes in each cell saves room. Hooke compared narrow pieces of cork to "Honey-comb" or "small Boxes or Bladders of Air." Since the development of classical cell theory, technology has advanced, allowing for more precise observations that have resulted in novel cell finds. They're broken—teaches us about the cellular mechanisms that keep us healthy. It also reveals novel approaches to illness treatment.

As a result of the increased number of organelles in contemporary cells, we can infer that they are more challenging to research than primordial cells.

Advantages of having children in one's twenties are as follows: The parents have more physical energy. The mother is likely to have fewer health problems. The parents are less likely to build up expectations for their children.

Being pregnant and giving birth is a tiring and physically demanding job. In addition, taking care of a child, especially a young one, can be equally exhausting. It is said that having children in your twenties will provide you with more physical energy. When a mother gives birth at an early age, her body is much more capable of bouncing back than it would be at a later age. The mother is also likely to have fewer health problems than an older mother, making the child's early years much easier.

There is also an advantage for parents in that they are less likely to build up expectations for their children. The younger parents don't have to worry about things like paying for their children's education, so they can simply focus on the enjoyment of raising their child.

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In an aphotic zone of a body of water, there is no photosynthesis. The correct answer is option B.

The aphotic zone, which is also known as the abyssal zone, is a section of the ocean or other bodies of water that is entirely devoid of light. It is the area below the photic zone, where sunlight is abundant enough for photosynthesis to occur.However, in an aphotic zone, the sun's light does not reach the ocean floor. This implies that no photosynthesis occurs in this area since plants and other photosynthetic organisms require light to survive. So,there is no photosynthesis in an aphotic zone of a body of water.

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Answer:Its D

Explanation:

The core RNA polymerase of a bacterium is composed of four subunits: two α subunits, one β subunit, and one β' subunit. The α subunits have regulatory roles, while the β and β' subunits are responsible for catalyzing RNA synthesis.

The β subunit is responsible for binding the DNA template and the incoming ribonucleotides, while the β' subunit is responsible for catalyzing the formation of the phosphodiester bonds between the ribonucleotides.

The core RNA polymerase is able to carry out elongation of the RNA transcript, but additional subunits called sigma factors are required for the initiation of transcription at specific promoter sequences. Different sigma factors confer specificity to the RNA polymerase by recognizing different promoter sequences and binding to the core enzyme to form a holoenzyme.

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When a stimulus is applied to a receptor in the skin, an action potential is propagated along a neuron to the brain, where another signal is sent back to the muscle for a response. When the action potential reaches a chemical synapse at the end of an axon, neurotransmitters are released into the synaptic cleft, which then binds to receptor proteins on the postsynaptic membrane.

When the action potential arrives at the end of the presynaptic neuron, it induces the opening of voltage-gated calcium ion channels. This allows calcium ions to enter the presynaptic neuron, causing synaptic vesicles containing neurotransmitters to fuse with the presynaptic membrane.

The neurotransmitters are then released into the synaptic cleft, where they bind to specific receptor proteins on the postsynaptic membrane. This leads to the opening of ion channels on the postsynaptic membrane, causing depolarization and the generation of a new action potential in the postsynaptic neuron. This action potential is then propagated along the postsynaptic neuron, leading to the transmission of the nerve impulse through the nervous system. Therefore, neurotransmitters play an important role in the transfer of information between neurons at chemical synapses.

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Because it reduces solubility and produces one non-reducing end, maintaining proper blood sugar levels would stymie glycogen synthesis, which in turn would stymie glycogen synthesis and degradation. The correct answer is (B).

Since alpha-linkages occur approximately every 10 units, option (e) is correct because alpha-(1,6) linkages are separated by at least four glucose residues.

Phosphoglucomutase-1 (PGM1) is a phosphotransferase that catalyzes the reversible transfer of phosphate between the 1- and 6-positions of glucose, resulting in the interconversion of glucose 6-phosphate and glucose 1-phosphate.

The enzyme that debranches glycogen moves three of the remaining four glucose residues to the end of another glycogen branch, leaving only the glucose at the branch's point. A glucose molecule is produced after the (16) glucosidase cleaves the glycosidic bonds.

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The ability to maintain a constant body temperature was the key factor for the success of vertebrates in relatively dry environments.

The ability to maintain a constant body temperature was the most important factor for vertebrate success in relatively dry environments. This ability allowed vertebrates to withstand harsher temperatures and survive longer in the dry environment. It allowed them to conserve more energy by regulating their body temperature. The shelled, amniotic egg was a key adaptation for surviving in relatively dry environments. The amniotic egg allowed the embryo to develop in a fluid-filled environment and was able to retain moisture longer. This protected the embryo from drying out, which allowed the vertebrates to live longer.

Two pairs of appendages also helped vertebrates survive in the dry environment. The limbs allowed the vertebrates to move around in the dry environment and access food and water. They also allowed them to search for shelter and escape predators.  Bony scales were also essential for the survival of vertebrates in a dry environment. The scales were a protective layer that kept the vertebrates warm and insulated. It also provided a barrier against harmful elements and diseases.
A four-chambered heart was also important for the success of vertebrates in relatively dry environments. The four-chambered heart allowed the vertebrates to regulate their blood flow, which improved their overall health and allowed them to live longer in the dry environment.
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The risk for a woman who had retinoblastoma in early childhood due to a partial deletion on one number 13 chromosome to have a child who also develops the disorder is 50%.

Retinoblastoma is a type of cancer that grows in the retina. It is caused by mutations or genetic changes in the DNA of cells in the retina, which cause them to divide and multiply uncontrollably.

Retinoblastoma is classified into two categories: hereditary and sporadic. Sporadic retinoblastoma occurs randomly without any clear cause, whereas hereditary retinoblastoma is caused by a genetic mutation that is passed down from one or both parents.

The risk for a woman who had retinoblastoma in early childhood due to a partial deletion on one number 13 chromosome to have a child who also develops the disorder is 50%. If the mother has a mutation in one copy of the RB1 gene on one chromosome 13, there is a 50% chance that she will pass the mutation on to her offspring.

If the child receives the mutation, they will inherit a single copy of the mutated RB1 gene and will be at an increased risk of developing retinoblastoma. If the mother passes on the normal RB1 gene, her child will not have an increased risk of developing retinoblastoma.

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The article describes how biologist Kenneth Lohmann discovered that baby loggerhead turtles use the Earth's magnetic fields and waves to orient themselves and direct their swims, through experiments tying newborns to a device and observing their movements in a large glass tank filled with water.

The question being investigated is: How do baby loggerhead turtles orient themselves and navigate long distances across the ocean to return to their birthplace.

The hypothesis is that baby loggerhead turtles use the Earth's magnetic fields and waves to orient themselves and navigate long distances.

The independent variable is the Earth's magnetic fields and waves.

The dependent variable is the direction in which the turtles swim.

The constants are the size and age of the loggerhead turtle hatchlings, the water temperature and composition, the darkness in the tank, and the location of the experiment.

The data shows that the loggerhead turtle hatchlings swam in the same direction within minutes of being placed in total darkness and that the direction was between magnetic north and east, leading away from Florida's east coast and toward the Gulf Stream currents. When the magnetic field was reversed, the turtles swam in the opposite direction - towards the southwest. The analysis shows that the turtles are using the Earth's magnetic fields to orient themselves.

The conclusion is that baby loggerhead turtles use the Earth's magnetic fields and waves to orient themselves and navigate long distances, allowing them to return to the same beach where they were born years later. This is an example of the scientific method, in which a question is asked, a hypothesis is developed, an experiment is conducted, data is collected and analyzed, and a conclusion is drawn.

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The question is -

Turtles Ahoy! (A real implementation of the scientific method) Did you ever wonder how baby sea turtles can run down into the ocean after hatching, paddle thousands of miles across the North Atlantic, and find their way back years later to the same beach they were born in?

Curious about these creatures, a biologist at the University of North Carolina at Chapel Hill have discovered at least part of the answer. Baby loggerhead turtles, no bigger than a child's hand, use the Earth's magnetic fields and waves to orient themselves and direct their marathon swims. In a recent issue of Scientific American magazine, biologist Kenneth Lohmann describes experiments showing their biological compass. Working with Florida Atlantic University science researchers, Lohmann tied loggerhead turtle hatchlings (newborns) to a device and placed them in a large glass tank filled with water.

Within minutes of placing the hatchlings in total darkness, researchers observed that the turtles all swam in the same direction. In fact, most of them swam towards points located between magnetic north and east, directions that would lead them away from Florida's east coast and toward the Gulf Stream currents. The biologists also found that when they reversed the magnetic field, the turtles swam in the opposite direction- toward the southwest.

1. Circle and label the question that is going to be investigated.

2. What is the hypothesis?

3. What is the independent variable?

4. What is the dependent variable?

5. What are the constants?

6. Describe the data and analysis.

7. What is the conclusion?

When the ligaments that attach a bone at a joint are torn, it can result in a joint dislocation.

A joint dislocation occurs when the bones that normally come together at the joint are forced out of position. This can cause the bones to lose contact with each other, resulting in a loss of joint function and severe pain. In addition to ligament tears, dislocations can also be caused by trauma, disease, or abnormal joint development. Treatment for joint dislocations typically involves reduction, or repositioning of the bones, as well as rehabilitation exercises and pain management. In some cases, surgery may be required to repair damaged ligaments or bones.

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An individual's brain activates mirror neurons, a particular type of brain cell, both when they carry out a particular action and when they see another person carrying out the same action.

Mirror neurons are a type of brain cell that are activated both when an individual performs a specific action and when they observe another individual performing the same action. They were first discovered in macaque monkeys by Italian neuroscientist Giacomo Rizzolatti and his team in the 1990s.

Mirror neurons are found in several areas of the brain, including the premotor cortex, inferior parietal lobule, and superior temporal sulcus. They play a role in understanding the actions and intentions of others, as well as in the development of empathy and social cognition.

Research suggests that mirror neurons may be involved in a range of functions, from imitating the behavior of others to language acquisition, and even in the development of certain disorders such as autism.

Overall, mirror neurons provide insight into the neural mechanisms underlying social behavior, and continue to be an active area of research in neuroscience.

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The hypothesis that states long-term environmental unpredictability led to hypothesis and behavioral adaptations is:  Turnover

The hypothesis suggests that environmental changes due to climate or other factors cause species to respond to the change by undergoing evolutionary adaptations to become more adapted to the new conditions. This can result in increased diversity of species or increased survival rates in a given area.

The hypothesis is based on the idea that some species are better suited to survive certain changes than others, allowing them to survive and thrive in a given environment. The hypothesis is supported by evidence that shows species in more unpredictable environments tend to have higher diversity levels than those in more stable ones.

In summary, the Turnover Hypothesis suggests that long-term environmental unpredictability leads to evolutionary adaptations and selection aridity, which can result in increased species diversity and increased survival rates in a given area.

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Alleles of a gene are typically located at the same position on homologous chromosomes, which are a pair of chromosomes that have the same genes in the same location.

Homologous chromosomes are derived from each parent, and they pair up during meiosis, the process of cell division that produces gametes (sperm and egg cells).

Each gene on a homologous chromosome pair has two versions, one from each parent. These versions of a gene are called alleles. Homologous chromosomes ensure that each gamete receives one allele for each gene, which is important for genetic diversity in offspring.

The location of a gene on a chromosome is called its locus, and the specific alleles present at that locus determine an individual's genetic makeup. Dominant alleles are expressed when present in a heterozygous state with a recessive allele, while recessive alleles are only expressed when present in a homozygous state.

The study of the inheritance of genes and alleles is called genetics, and it has significant implications for understanding biological diversity, evolution, and human health.

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For patient A the treatment of broken bone is with splints or surgery. For patient B the treatment of diabetic peripheral neuropathy is with insulin medications. For patient C, the treatment of muscle sprain is using pain relief medications.

Nervous and musculoskeletal injuries occurs when there is damage to the nerve or the musculoskeletal system due to a direct impact or an underlying illness.

Patient A sustained a direct injury to the bone after an incidence of a bike accident.

Treatment plan: The treatment plan for a bone fractures is either through surgery or through the use of splints to immobilize the broken bones and hasten recovery.

Patient B who is a diabetic patient reported to the hospital complaining of numbness and tingling in his right foot. This is a nervous injury or damage that occurred due to the underlying illness.

Treatment plan: This involves managing blood sugar with insulin and using medication to control nervous symptoms.

Patient C who sustained muscle sprain during a track event complained of tightness and pain in the back of her calf.

Treatment plan: This should include pain relievers, ice or splinting but depends on the extent of injury.

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Full Question ;

FIRST TO ANSWER THIS WITH THE CORRECT INFORMATION GETS BRAINLIEST AND PLS DO FAST

Nervous and Musculoskeletal Worksheet

Instructions: Fill in the sections below based on the Helping Dr. Homeostasis interactive. You may use articles, videos, books, or journals to get treatment suggestions. Make sure you use reliable sources, like those from medical, educational, or government agencies.

Patient A

Diagnosis:

Treatment plan—list at least two possible treatments:

Cite the sources you used to create the treatment plan:

Patient B

Diagnosis:

Treatment plan—list at least two possible treatments:

Cite the sources you used to create the treatment plan:

Patient C

Diagnosis:

Treatment plan—list at least two possible treatments:

Cite the sources you used to create the treatment plan:

Patient A came to the clinic after having a bike accident. She has severe pain in her left forearm. The pain increases when she moves the arm, and her arm is quite swollen. The X-ray shows an abnormality with the radius bone in the forearm.

Use the internet to search for treatments for broken bones.

Record possible treatments on your activity report.

Make sure you list the websites you use to create a treatment plan.

Patient B came to the clinic complaining of numbness and tingling in his right foot. He described the pain as feeling like pins and needles. There is no swelling, bruising, or redness. The X-ray shows no breaks or fractures, but the patient states that he has type 2 diabetes. A blood glucose test shows high blood glucose levels.

Use the internet to search for diabetic peripheral neuropathy treatments.

Record possible treatments on your activity report.

Make sure you list the websites you use to create a treatment plan.

Patient C came to the clinic complaining of pain in her left calf. Her calf is swollen and hurts even when at rest. Before coming in to the clinic, Patient C had been running track. All of a sudden, she felt tightness and pain in the back of her calf. The X-ray shows no breaks or fractures, and an MRI shows no nerve damage.

Use the internet to search for muscle sprain treatments.

Record possible treatments on your activity report.

Make sure you list the websites you use to create a treatment plan.

The important difference between the effect of selection against a recessive allele and selection against a dominant allele is that selection against a recessive allele reduces the frequency of the allele in the population.

Whereas selection against a dominant allele reduces both the frequency of the allele and the frequency of the homozygous recessive genotype in the population. To break it down further, a recessive allele will only produce an observable phenotype in an individual who is homozygous for that allele, meaning that two copies of the allele must be present for it to be expressed. Selection against a recessive allele will only act upon individuals that are homozygous for that allele. Therefore, the frequency of the allele will be reduced in the population, but the frequency of the homozygous recessive genotype will remain unaffected.

In contrast, a dominant allele will produce an observable phenotype in an individual who is either homozygous or heterozygous for the allele. Therefore, selection against a dominant allele will act upon both individuals that are homozygous and heterozygous for that allele. This means that the frequency of the allele, as well as the frequency of the homozygous recessive genotype in the population, will be reduced.

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