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Related Questions
Pigmented eyes (P) are dominant to non-pigmented (p), and dimpled chins (D) are dominant to Non-dimpled chins (d). A pigment-eyed, dimple-chinned man marries a blue-eyed woman without a dimpled chin. Their firstborn child is blue-eyed and has a dimpled chin. What are the possible genotypes of the father
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Answer:
PpDD and PpDd
Explanation:
Pigmented eyes (P) are dominant to non-pigmented (p), and dimpled chins (D) are dominant to Non-dimpled chins (d).
The possible genotypes of a pigment-eyed, dimple-chinned person would be PPDD, PpDd, PPDd, PpDD while a blue-eyed person without a dimpled chin would have the genotype ppdd.
The genotype of a blue-eyed, dimpled chin child would be either of ppDd or ppDD, but in this case, the mother is ppdd and as such, the child cannot have two copies of D allele. Hence, the genotype of the child can only be ppDd.
In order for the child to have blue eyes (pp), it means that the father has to have the non-pigmented allele (p). This also means that the father is heterozygous for eye pigmentation (Pp).
Hence, the genotype of the father is now limited to PpDD and PpDd.
All of the following statements about a pure substance are true except:
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Answer:
I think the one that is not true is it can always be easily seperated physically.
Explanation:
What change is most likely
responsible for the trout decline? *
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Answer:
Rise in temperature.
Explanation:
Increase in temperature is responsible for the decline in the population of trout because trout needs low temperature for better growth and survival. Due to more consumption of fossil fuels in vehicles and industries, more carbondioxide gas is released which causes air pollution. This air pollution increases the temperature of the earth surface known as global warming due to which the cold areas become warm and as a result the trout population decreases.
In mouse, genes X, Y and Z are on chromosome 2. The map of genes X, Y and Z is:
X----------------Y-------------------------Z
20 m.u. 30 m.u.
You cross an individual with genotype XXYYZZ to an individual with genotype xxyyzz, and F1 progeny are collected. Assume interference between regions (X-Y and Y-Z) is 100%. When an F1 individual produces gametes, what proportion of its gametes would have xyz genotype?
a. 10%
b. 20%
c. 25%
d. 30%
e. 40%
f. 50%
g. 0%
h. None of these above
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In F1 we will get 100% XxYyZz
each of these organism has two chromosomes that look like this
X..........20..........Y...............30...............Z
x..........20..........y...............30...............z
Those two chromosomes are homologous
we want a gamete that contains the second chromosome where crossing-over didn't occur. The distance between the genes of the chromosomes in map units is equal to the frequency of recombination in percentage. Therefore there is a 20% that x and y will recombine and a 30% chance that y and z will recombine. We want a chromosome that is not recombined.
The possible gametes are
XYZ XYz XyZ Xyz xYZ xYz xyZ xyz if the genes were on different chromosomes xyz would be 1/8 or 12,5%
Since there is a 20% that the genes x and y will recombine that means there is a 80% chance that they won't and since there is a 30% chance that the genes y and z will recombine that means there is a 70% chance that they won't.
80%*70%=56% chances that the genes won't recombine. But, there are two non-recombinant gametes:XYZ and xyz therefore the chances for xyz is 56/2=28%
In mouse, genes X, Y and Z are on chromosome 2. The map of genes X, Y and Z is: X----------------Y-------------------------Z, When an F1 individual produces gametes, we will get 100% gametes would have xyz genotype that is XxYyZz, it can be represented as
X..........20..........Y...............30...............Z
x..........20..........y...............30...............z
What is chromosome ?A chromosome can be observed as a thread-like structure present in the nucleus of cells such as plant, animal and human cells, composed of DNA (Deoxyribonucleic acid) molecule and histone proteins.
The three major components, DNA, proteins and RNA, the content of the DNA ranges from 30 to 40 % whereas proteins from 50 to 65%, and small amount of RNA ranges from 1 to 10%.
Two types of protein present such as histone and non-histones proteins, histone content is more (90% of total protein), whereas non-histone is content is less (around 10% of total protein).
The histone protein is basic, the DNA is acidic which can be neutralized; DNA is present in two forms such as Euchromatin and Heterochromatin.
20% that x and y will recombine and a 30% chance that y and z will recombine. We want a chromosome that is not recombined.
The possible gametes are XYZ XYz XyZ Xyz xYZ xYz xyZ xyz if the genes were on different chromosomes xyz would be 1/8 or 12,5%
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can someone please describe a plant's circulatory system or how it works?
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Explanation:
Mark me brainlessTrue or False: An element is a substance that is made up of one type of atom.
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Have a good day!
Answer: True.
Explanation:A pure substance is something that occurs in nature. An element is made up of one type of atom only and cannot be split further. A compound has the combined properties of the elements from which it is made. Atoms show the macro properties of an element.
What determines how strong a volcanic eruption will be?
A. The basalt content of magma
B. The viscosity of the magma
C. The total depth of magma
D. The total amount of magma
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Answer:
The answer is B. the viscosity of the magma
Explanation:
The viscosity of the magma is related to what the magma is composed of, depending on what it is the eruption would be stronger or weaker
CAN SOMEONE PLEASEEEE HELP ME WITH THIS SCIENCE QUESTION THANK YOU !!!!
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Inter in Latin means between
Between two of the same species
Directions: Select the correct term or terms from the table. Different organisms have different traits, or characteristics. Some of an organism's traits are inherited from the organism's parents, while other traits are more strongly influenced by the organism's environment. Among most animals, which of the following traits are usually directly determined by genes inherited from the organism's parents? sex body weight knowledge blood type
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Answer:
The correct answer is - sex and blood type.
Explanation:
Different organisms have different traits some are passed from the parents and other traits are developed by environmental influences. The traits that are passed from parents to the offspring are determined by the genes they inherited from the parents. In humans, sex is determined by the genes that present on the chromosomes and make the chromosome X chromosome or Y chromosome. The presence of the Y chromosome determines maleness.
Similarly, the blood group is determined by the genes, there are three alleles of the ABO gene present on chromosome 9; A. B. and O each allele code for a different antigen which helps them categorizing in blood groups.
Question 18 OT 25
Scientists study how the continents move. Why might scientists use a model
to show this movement?
A. It is too dangerous to observe directly.
B. It is too fast to observe directly.
C. It is too slow to observe directly.
O D. It is too complex to observe directly.
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Answer:
A. It is too dangerous to observe directly.
Hope this helps! :D
How would you classify the most recent historical examples of STEM
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Answer:
science discovries because it is
Explanation:
A. If you have several samples of liquid and are told that one contains living organisms,
what type of in vestigation would you do to determine which liquid contains the living
things?
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Answer: (Aerobic and anaerobic respiration)
Explanation:
Respiration by living organisms can be investigated by carrying out experiments to show the production of carbon dioxide and heat.
Investigating carbon dioxide production
Limewater turns milky in the presence of carbon dioxide. It can be used to show that exhaled air contains more carbon dioxide than inhaled air.
Carbon dioxide dissolves in water to form a weakly acidic solution. Hydrogencarbonate indicator is used to show the presence of carbon dioxide in solution. It is:
red at neutral pH (no carbon dioxide)
yellow at low pH (carbon dioxide present
which is most likely a source of air pollution?
A.littering
B.CFCs
C. oil spill
D.runoff
Quick this is a timed exam
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Answer:
B) CFCs
Explanation:
chlorine in the CFC is very harmful to the ozone layer
Air pollution is the contamination of the air and its surroundings due to air pollutants. Chlorofluorocarbons (CFCs) are most likely a source of air pollution. Thus, option B is correct.
What are Chlorofluorocarbons?Chlorofluorocarbons (CFCs) are nontoxic chemicals that contain chlorine, fluorine, and carbon. They are largely used in the manufacturing of refrigerants, foams, sprays, etc.
Chlorofluorocarbons destroy the protective ozone layer of the earth and affect its ability to shield the harmful UV rays from the sun. Due to their dangerous effect on the ozone, they are banned.
They are emitted and get deposited in the earth's atmosphere causing the greenhouse effect that causes the melting of the ice and increases in the sea level to rise in temperature.
Therefore, chlorofluorocarbons are the source of air pollution.
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Cells that perform a specific function in an organism __
A. preform all of the functions
B. are specialized
C. are all the same
D. can survive on their own
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Road construction has isolated a small population of a beetle population from the main population. This newly isolated population has very different allele frequencies than the main population, most probably because
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Answer:
genetic drift
Explanation:
The newly isolated population of beetle would have very different allele frequencies than the main population because of genetic drift.
Genetic drift refers to a change in the frequencies of alleles in a population over generations brought about by pure chance. Genetic drift can cause a bottleneck or founder effect. A bottleneck effect is a temporary decrease in the genetic diversity of a population while the founder effect refers to a decrease in the genetic variability of a new population formed from a small number of individuals that get separated from a larger population.
Hence, the newly formed population of beetles would have lower allele frequencies than the main population due to the founder effect brought about by genetic drift.
The scientific name of a mountain lion is Felis concolor and a house cat is Felis catus. Based on the names, you can determine that these two animals belong to the same: *
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What digestive system component synthesizes bile?
Bile (a breakdown product of the red blood cell pigment, hemoglobin) emulsifies fat.
The
synthesizes bile.
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Answer: liver
Explanation:
just got a 100
the question is asking “what organ makes bile”
The U.S, poultry industry is primarily in
O midwest
O Southwest
O Northwest
O Northeast
O Southeast
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Answer
Northeast
Explanation:
Poultry production, consisting of broilers and egg-laying flocks, is located primarily in the eastern third of the state. More than 211.3 million broiler chickens were produced on Oklahoma farms in 2019, generating $729 million to the state's agricultural cash receipts.
Study the given flow chart carefully. Cotton and silk are represented by the letters _____ and ____respectively.
P, Q
Q, R
Q, S
R, S
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Sierra is asked to demonstrate how carbon travels from the atmosphere to living organisms, then back to the atmosphere. She draws a diagram showing carbon dioxide from the atmosphere being taken in by a plant. An animal then consumes the carbon dioxide in the plant, uses it as a source of energy, then exhales, returning the carbon dioxide to the atmosphere. Which of the following statements indicates a correction that needs to be made on Sierra's diagram?
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Answer: An animal then consumes the carbon dioxide in the plant, uses it as a source of energy, then exhales, returning the carbon dioxide to the atmosphere.
Explanation: This is incorrect, because animals consume oxygen released by plants, then exhale the carbon dioxide into the atmosphere.
Answer:
B
Explanation:
Animals do not use carbon dioxide as an energy source; they use sugars or starches.
Hope this helps! :D
3 a process in which complex organic molecules are synthesized (created) using carbon dioxide, water, and light energy capture by chlorophyll?
A cellular respiration
B chloroplast
C mitochondria
Dphotosynthesis
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Answer:
Photosynthesis
Explanation:
Photosynthesis is the process by which plants manufacture food substances from carbon (iv) oxide and water using energy from sunlight
At what pH levels are enzymes in the human body productive?
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Answer:
Between ph7 and ph 11
Explanation:
The optimum pH level for this is at pH7 because the number achieved was 350 product molecules per Minute
what is the major source of oxygen for the earths atmosphere
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Answer:
marine plants
Explanation:
5. What benefits does fitness water have for an athlete?
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Answer:
Water fitness* adds more resistance to your movement which requires more energy to do things
Explanation:
I would say that fitness water is beneficial because it hydrates the body. Also, when you're hot it can cool you down.
A HOX gene called Pax6 is required for developing light sensing eyes (or eye-like structures) in a range of taxa including Cnidaria, Mollusca, Arthropoda, and Chordata. Humans (Chordata) and squid (Mollusca) have complex eyes with many shared features, like a lens, that are NOT found in other taxa that have eyes or eye-like structures. Which of the following statements is TRUE?A. If human eyes and squid eyes are analogous, then the Pax6 gene in humans and squid will be nearly identical.B. If human eyes and squid eyes are analogous, then their shared common ancestor would also have complex eyes.C. If human eyes and squid eyes are homologous, then the Pax6 gene in humans and squid will be nearly identical.D. If human eyes and squid eyes are homologous, then they have independent evolutionary origins.
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Answer:
hgs do lm jb each l ok bc Z ok but we b
tell me
An offspring can get more DNA from one parent than from the other is this true or false
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Answer: True
Explanation: If it is sexual reproduction it is half the DNA of both parents. Asexual reproduction is DNA only from one parent. And many times it happen. Think of this many people look much more like their mother than their father or maybe the other way around. Brainlest please!!
in the membranous skeleton ----sheath surrounds the central nervous system I perineural ii perineurium iii peritoneum iv perichondrium
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The answer is perineural since peri means around and neural CNS
Light energy is converted into this type of energy usable by all organisms
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Answer:
photosynthesis
Explanation:
Hurryyyyyy is Dog fetching
acquired or
inherited
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Answer:
It's an acquired trait not a inherited trait because inherited means passed down from the parents. An example of inherited would be freckles.
Explanation:
Answer:
Acquired. Inherited traits are manifested since birth, while acquired traits are learnt.
Explanation:
:|
Mendel used more than 28,000 pea plants in his experiments. How did such a large sample size improve the reliability of his results?
A. Using many plants ensured that both males and females were available.
B. Using more plants made the experiments much faster.
C. Using more plants was necessary because some were unable to reproduce.
D. Using many plants gave results that supported his prediction of ratios.
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Answer:
D. Using many plants gave results that supported his prediction of ratios.
Explanation:
Using more plants in any experiment, such as this one, will make the results more accurate.
By using more pea plants, Mendel's prediction was more supported by the results. A larger sample size will allow the ratios to be more reliable compared to a smaller sample size.