Answer:
Because of recombination and independent assortment in meiosis, each gamete contains a different set of DNA. This produces a unique combination of genes in the resulting zygote. Recombination or crossing over occur during prophase 1
What is symbiosis meaning?
Answer:
interaction between two different organisms living in close physical association, typically to the advantage of both.
Explanation:
Hope this helps :D
Answer:
It is the interaction between two different organisms that typically has an o advantage to each other.
Explanation:
An example could be the relationship between an anemone (Heteractis magnifica) and a clownfish (Amphiron ocellaris). It's example of two organisms benefiting the other- the anemone provides the clownfish with protection and shelter, while the clownfish provides the anemone nutrients in the form of waste.
A cell would be unable to go through meiosis if it is:
Question 2 options:
haploid (1n)
diploid (2n)
tetraploid (4n)
hexaploid (6n)
Answer:
Haploid
Explanation:
What is an allele frequency?
Answer:
the meaning of allele frequency is representing the incidence of a gene variant in a population
Explanation:
Which class of protozoa shows nuclear dimorphism:
Answer:
Protozoan Tetrahymena
hope it helps!
Protozoa are eukaryotic organisms that are single-celled and free-living. Paramecium and Tetrahymena are the members of the ciliated class of Protozoan showing nuclear dimorphism.
What are Protozoa?Protozoans has been defined as unicellular eukaryote that is either parasitic or free-living. Ciliate is one of the classes of Protozoans that are characterized by the presence of cilia on the outer surface of the body.
The genus Paramecium and Tetrahymena of ciliated Protozoans show nuclear dimorphism as they have two different types of nuclei in their cell. One of the nuclei is somatic and the other is germline.
This property of nuclear dimorphism is seen in the lower organism like the Protozoans that needs a micronucleus for reproduction and the other macronucleus for the functioning and regulating of the cell. This property of the Protozoans makes them different from the other eukaryotes that possess only a single nucleus in their cell.
Therefore, the ciliated class of Protozoans shows nuclear dimorphism.
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Pleaseeee help!!! (psychology edge) Androgens and estrogens are hormones that impact the sexual response cycle. Write about the four phases of that cycle and explain how the two types of hormones are involved.
Answer:
Females and males each have some amount of the sex hormones, androgens and estrogens. In males however, androgens like testosterone is more dominant and in females estrogens like estradiol are more dominant. The hormones both affect the sexual response cycle. The sexual response cycle has four phases: desire, arousal, orgasm and resolution. The desire phase can last anywhere from a few minutes to hours and includes physical changes like an increase in muscle tension, heartbeats quickening, flushed skin, and an increased flow of blood to genitals. The arousal phase extends to the brink of the orgasm phase, during this phase the changes experienced in the desire phase are intensified along with blood pressure increasing. The orgasm phase generally only lasts a few seconds and is the climax of the sexual response cycle, some characteristics include: Involuntary muscle contractions and spasms, blood pressure, breathing, and heart rate at their highest point, a release of built up sexual tension, and flushed skin. During the resolution phase the body returns to normal, often a sense of wellbeing and fatigue is achieved. To begin the cycle a male need a certain amount of the androgen, testosterone, but high levels in females tend to lead to more sexual thought and desires, typically though, women have relatively low levels of testosterone. In women, estrogens, such as estradiol are more common. Estrogens are produced when a girl starts puberty and helps her reproductive cycle begin. A high level of estrogen in men can lead to a reduced sex drive, loss of hair, or trouble focusing, but a normal level in men is crucial to proper erectile function.
Explanation:
I just submitted this, i hope it helps :)
How has the size of U.S. farms changed since World War II?
Answer:
Farmers Produce More Food for War in World War II. As the war approached, it got worse for farmers before it got better. Farming exports fell 30 to 40 percent below the average of the ten depression years that preceded the war. Grain exports, for example, fell 30 percent in one year between September 1939 and 1940.
Explanation:
Question 7 (3 points)
(01.05 MC)
The distance time graphs for two objects are shown below:
Object A
Object B
Distance
(miles)
Distance
(miles)
Time
(hours)
Time
(hours)
Which statement is true? (3 points)
Ob
Both objects move at variable speeds.
Both objects move at a constant speed.
Object A is moving at constant speed but Object B is moving at variable speed.
Object A is moving at variable speed but Object B is moving at constant speed.
Od
Answer:
object b is moving at constant speed and object a is moving at variable speed
why we must control number of breeding animals captivity excess
Answer:
Captive breeding is generally undertaken when a species has reached critical population levels where risk of extinction is likely. ... Protect the population against disease. Preserve the gene pool to avoid problems of inbreeding. Provide animals to re-establish or restock wild populations when needed.
Which of the following is NOT an example of stored chemical energy?
glucose
ATP
bread
starch
Answer:
The answer is ATP
The asthenosphere is the second layer of Earth characterized by
O soft rocks that flow easily
O layers of both hard and soft rocks
O magma
O hard rocks that break
Answer:
soft layers that flow easily.
The forces shown in the diagram caused the rock layers to
A Fault
B Folohy
С Form
D Expand
Which level of organization is shown in the image? Cell. Tissue. Organ. Organ system. "Cobblestones" is not an option.
This is adipose tissue.-----tissue level
replicate the following dna strand TAT-TAG-ATT-ACA
The replication of the given DNA strand TAT-TAG-ATT-ACA is ATA-ATC-TAA-TGT.
What is DNA replication?DNA replication may be defined as a type of biological process through which the genomic DNA of an organism gets copied into the cell during the time of cell division. During this process, the two identical replicas of DNA are produced from one original DNA molecule.
According to the context of this question, when it comes to DNA replication, adenine is replaced by thymine and vice-versa while guanine is replaced by cytosine and vice-versa. So, the amount of adenine remains equal to the amount of thymine and the amount of guanine remains equal to cytosine.
Therefore, the replication of the given DNA strand TAT-TAG-ATT-ACA is ATA-ATC-TAA-TGT.
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Mitosis produces which cell type?
haploid
diploid
chromosome
gamete
Answer:
b, diploid.
Explanation:
Mitosis produces two diploid somatic cells, genetically identical to each other and the parent cell.
Mitosis produces diploid cells (option B)
What is Mitosis?Mitosis is a process of cell division observed in cells. Its primary purpose is to ensure that the genetic information, in the parent cell is equally distributed among the resulting daughter cells.
During mitosis the process generates cells that are diploid, meaning that the number of chromosomes in the parent cell is the same as the number in the resulting daughter cells.
In contrast haploid cells have half the number of chromosomes found in cells. Examples of haploid cells include sperm and eggs which are known as gametes.
Notably, we can conclude that mitosis produces diploid cells (option B)
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which of these best describes what science is? A.a body of knowledge B.a way of doing experiments c. a way of looking at and thinking about the natural world D. a series of ideas
Answer:
A. It's the pursuit and application of knowledge and understanding of both the natural and social world.
What are the disadvantages of pteridophytes?
Answer:
Ferns don't reproduce with seeds so they don't spread as much as plants that produce seeds.
Explanation:
Which water conservation strategy is being used when a household uses eco-friendly cleaning products?
A:Reusing and recycling
B: limiting consumption
C: pollution prevention
D: eliminating losses
Need help ASAP
Answer:
Explanation:
Answer:
C: pollution prevention
Explanation:
Just took the test
The greater the _______
the ______
the angle the subducting slab goes down.
O heat; greater (steeper)
O heat; smaller (gentler)
O density, greater (steeper)
O density, smaller (gentler)
Answer:
Number 1 ...............
Humans drill wells into Earth's crust to draw out groundwater for drinking and
irrigation of crops. Which spheres are interacting? *
O
Atmosphere, biosphere, and hydrosphere
O Biosphere, hydrosphere, and geosphere
Geosphere, hydrosphere, and atmosphere
Atmosphere, biosphere, geosphere, and hydrosphere
Answer:
Biosphere, geosphere, hydrosphere
Explanation:
Plzz helpppp!!!!! Will give brainliest and 10 pts!!!!
Explanation:
Red-shift
Emission spectra
Light from a star does not contain all the wavelengths of the electromagnetic spectrum. Elements in the star absorb some of the emitted wavelengths, so dark lines are present when the spectrum is analysed. Different elements produce different patterns of dark lines. The diagram shows part of the emission spectrum of light from the Sun.
A gradient colour spectrum of the sun.
Spectra from distant galaxies
Astronomers can observe light from distant galaxies. When they do this, they see it is different to the light from the Sun. The dark lines in the spectra from distant galaxies show an increase in wavelength. The lines are moved or shifted towards the red end of the spectrum. This effect is called red-shift. The diagram shows part of the emission spectrum of light from a distant galaxy.
A gradient colour spectrum of a distant star.
Red-shift and speed
Astronomers see red-shift in virtually all galaxies. It is a result of the space between the Earth and the galaxies expanding. This expansion stretches out the light waves during their journey to us, shifting them towards the red end of the spectrum. The more red-shifted the light from a galaxy is, the faster the galaxy is moving away from Earth
List where all of the ATP molecules come from and how you add up to the total
Answer:
Explanation:
ATP molecules are used by all living organism as energy to carry out life functions. Also notable, ATP stands for Adenosine Triphosphate. This molecule is composed of three parts:
Adenine
Ribose
Three Phosphate Groups
How does heart rate affect blood pressure
Answer:
Does heart rate affect blood pressure?
A rising heart rate does not cause your blood pressure to increase at the same rate. Even though your heart is beating more times a minute, healthy blood vessels dilate (get larger) to allow more blood to flow through more easily. When you exercise, your heart speeds up so more blood can reach your muscles.
Explanation:
Answer: As your heart beats faster, healthy blood vessels will expand in size to allow increased blood flow, which helps your blood pressure remain relatively stable.
Explanation: I learned this in science
how larvae of fish get nutrition
Answer:
The larval period of fish development is certainly the most complex from the aspect of nutrition. During this period, the digestive tract is not fully phisiologicaly developed.
Explanation:
The nutrition of larvae is largely based on the consumption of zooplankton. Such food must be distributed to larvae 10-24 times a day.
Is The Pamlico Sound a potable water source ? If so , Why ?
Answer:
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Explanation:
dkasnldkmasjkdjlkasnmlkdna∑∑∑∑∑Which of the following is an example of a plant responding to the external stimulus of gravity?
A.) A seedling growing toward a sunny window
B.) A plant root growing down into the soil
C.) Flowers producing nectar to attract bees
D.) a potted plant wilting when it dries out
Answer:
b
Explanation:
bcs the root grows towards the gravity
Answer:
D
Explanation:
Question 43 of 100
In the "Habit Loop", the actual "behavior" is called the:
a. Cue
b. Routine
c. Craving
d. Reward
Next Previous
Answer:
The Habit Loop is a neurological loop that governs any habit. The habit loop consists of three elements: a cue, a routine, and a reward.
List three differences between light dependent and light-independent reactions of photosynthesis
increase productivity due to nutrient abundance is called
Answer:
primary production-?
Explanation:
hope u get it right
Which of the following is NOT a way that humans can reduce flooding?
Building a flood control dam
Removing trees and grass
growing near rivers
Building levees and walls
Making a river deeper or straighter
How many steps are involved in the bioremediation process?