Answer:
See below
Explanation:
A. centromeric regions from mother in one cell: 23
total number of centromeric regions in one cell: 46
for every centromeric region that is inherited by the gamete, there is a 0.5 probability that it is from the mother. Hence, if all are from the mother:
0.5 ^ 23 = 1.19 x 10^(-7)
B. Heterozygous for 2000 genes means 4000 possible alleles.
2 ^ 4000 = 1.3 x 10^(1204)
C. 2 ^ 46 = 7.03 x 10^(13)
what is evolutionary mechanism?
pls help>-<
Answer:
Evolutionary mechanism refers to the changes in allele frequencies within a single population.
why is the nucleus command center of the cell
Answer: The nucleus is the largest and most prominent of a cell's organelles (Figure 3.7). The nucleus is generally considered the control center of the cell because it stores all of the genetic instructions for manufacturing proteins.
Explanation: Plz can I have brainlest.
Which correctly describes a difference between the male and female
reproductive systems?
O A. Males store gametes in the ovary.
O B. Females produce gametes every day.
C. Males receive gametes from females.
D. Females produce fewer gametes
What describes the difference between the male and female reproductive systems is that "Females produce gametes every day". Option B. This is further explained below.
What is reproductive systems?Generally, The reproductive system is simply defined as the organs that are involved in the production of children.
In conclusion, The reproductive systems of males and females bear differences affiliated with gametes production.
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Answer:
D. Females produce fewer gametimes
Explanation:
Do I really need to?
What element do all organic compounds contain?
Carbon
Hydrogen
Nitogen
Oxygen
Answer:
carbon
Explanation:
carbon is a chemical element which exhibit a atomic mass of 12 and its a nonmetal
Some students used information they gathered from lab investigations to prepare a table. They entered the table in their lab notebooks. Which of these correctly identifies the two cells described in the table? Your answer: Cell 1 is eukaryotic, and Cell 2 is prokaryotic. Both Cell 1 and Cell 2 are prokaryotic. Cell 1 is prokaryotic, and Cell 2 is eukaryotic.
Answer:
A
Explanation:
a.
Identify the biotic limiting factor from the choices below.
space
b. vegetation
C. water
d. climate
Answer:
b.
Explanation:
Plants are living things(biotic).
water and climate are non-living things (abiotic)
Which scenario causes gene flow
Answer: Migration is one way that genes are transferred from one population to another.
Explanation: Gene flow is caused by a significant change in the population of individuals due to the addition of other individuals whose alleles are slightly different from those of the existing individuals
Answer:
Introgression refers to gene flow from another taxon. While low levels of gene flow between species are not uncommon, it is a serious issue when an introduced invasive species hybridizes with a native species and overwhelms its genetic constitution (genetic swamping). This is a major threat in canids, ducks, fish and plants. For example, exotic rainbow trout introduced into the habitats of native cutthroat trout in the Western United States led to hybrid swarms that eventually overwhelmed the local species. Introgression is readily detected by molecular genetic and genomic methods.
Explanation:
HOPE ITS USEFUL
The lock and key mechanism refers to
F. Answer the following questions in brief.
1. Why should we use fossil fuels judicially?
3. Define the term 'fossil fuel. Give two examples.
4. How can we conserve fossil fuels?
5. What is calorific value of a fuel?
6. What are conditions required for the formation of fossil fuels?
2. Give full form of CNG. Why is it preferred over other fossil fuels?
1. fossil fuels should be used judiciously as they can be exhausted if used excessively and will take time to replenish
2. fossil fuels are fuel formed by natural processes such as decomposition of dead organisms .
3. They can be easily exhausted
4.The calorific value of a fuel is the quantity of heat produced by its combustion i.e at constant pressure and under “normal” (standard) conditions (i.e. to 0 degree C and under a pressure of 1,013 mbar).
5. COMPRESSED NATURAL GAS . CNG preferred than fossil fuel because it produce greenhouse gases upon combustion, it is a more environmentally clean alternative to other fossil fuels
Answer:
1. fossil fuels should be used judiciously as they can be exhausted if used excessively and will take time to replenish
2. fossil fuels are fuel formed by natural processes such as decomposition of dead organisms .
3. They can be easily exhausted
4.The calorific value of a fuel is the quantity of heat produced by its combustion i.e at constant pressure and under “normal” (standard) conditions (i.e. to 0 degree C and under a pressure of 1,013 mbar).
5. COMPRESSED NATURAL GAS . CNG preferred than fossil fuel because it produce greenhouse gases upon combustion, it is a more environmentally clean alternative to other fossil fuels
Explanation:
11. The behavior of the land
masses over geological time
illustrates the theory of
Answer:
Continental drift theory
Explanation:
Continental drift theory refers to the movement of land masses over the earth's geological time. This movement n of the masses of the earth allows us to conclude that the continents change their shapes over time and change, including their location in different regions of the planet.
As we already know the movement of the masses of the earth is done in relation to the movement of the tectonic plates.
what are the molecules that make up the DNA rail?
i am usually single-stranded. is it DNA O RNA ?
Answer:
RNA
Explanation:
DNA is double-stranded DNA mostly and RNA is single stranded mostly.
If a lunar eclipse occurs tonight, the next lunar eclipse would occur?
Answer:
in 10 years
Explanation: im pretty sure
Answer:
every 2.5 years
Explanation:
For diffusion to occur, which condition must be met?
A concentration gradient must exist.
A hypotonic external environment must exist.
A hypertonic external environment must exist.
Dynamic equilibrium must exist.
Answer:
A concentration gradient must exist.
Explanation:
For diffusion to occur, a concentration gradient must exist. Therefore, the correct option is A.
The movement of molecules along a concentration gradient is known as diffusion. It is a significant process that all living things go through. Diffusion facilitates the flow of materials into and out of cells.
Without the use of energy, molecules can be transported from an area of high concentration to an area of low concentration through the process of diffusion. Simple diffusion and Complex diffusion are the two types of diffusion. Diffusion was made easier.
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how could the presence or absence of a protein determine a phenotype
Answer:Proteins Dictate Phenotype
Genotype controls phenotype because genes direct the production of proteins . ... Some proteins serve structural functions (for example, in the maintenance of cell and/or tissue shape and rigidity) while others are involved in the transport of molecules and communication between cells.
Answer:
Each protien is essentially a code for a genotype (what the DNA is "saying"). Different genotypes (or DNA combinations) cause the person, plant, animal, etc. to look different.
within which structure does the placenta normally develop ?
Answer:
Uterus
Explanation:
Answer:
Uterus
Explanation:
The female reproductive system mainly takes place here
25 points if you answer this. Genetic drift and natural selection can both be mechanisms of evolution. However, they are very different mechanisms.
Explain how genetic drift is different from natural selection.
Read the information for transcription and then answer the question. Protein Synthesis Explain the process of transcription.
Answer:
Please find the explanation below
Explanation:
Transcription is the first process that occurs in protein synthesis. It involves the use of the stored information in the DNA molecule to synthesize a mRNA molecule.
Transcription, which occurs in the nucleus of eukaryotes and cytoplasm of prokaryotes, is catalyzed by an enzyme called RNA polymerase. RNA polymerase binds to the double-stranded DNA and begins to unwind it (Initiation). This unwinding causes the nucleotide bases to be exposed in order for the RNA polymerase enzyme to read.
The enzyme reads the bases of the DNA and begins to synthesize RNA nucleotides using the complementary base pairing rule (Elongation) i.e. Adenine base paired with Uracil base (RNA), and Guanine paired with Cytosine etc.
The single-stranded mRNA is released at the end of the transcription process (termination). This is basically what occurs in transcription.
The gene coding for the protein untwists and unzips.
RNA nucleotides form complimentary base pairs with the DNA bases.
Hydrogen bonds and sugar-phosphate bonds form and the mRNA strand is synthesized.
mRNA peels off the DNA and moves to the cytoplasm.
what animals that grow naturally in the Pacific Northwest and Kitsap Peninsula ? please help
Answer: Pacific Northwest Animals & Birds
Spotted and snowy owls. Bald and Golden eagles. Pileated woodpecker. Rufous hummingbird. Great Blue Heron and Canada goose. Seabirds, including cormorant. Bear. Olympic marmot.Kitsap Peninsula:
Marine mammals of the sound include orcas, sea lions, sea otters, gray whales, humpback whales, and harbor seals. Underwater plants provide food, breeding areas, nurseries, and resting places for wildlife in the sound.
Pluto dwells on the inner edge of the
A. Oort Cloud
B. Main asteroid belt
C. Kuiper belt
Power is measured in _______?
Answer:
joules
Explanation:
i think
Based on the genotype of AB blood, what relationship do the A and B genes have?
A is recessive.
B is recessive.
They show incomplete dominance.
They are codominant.
Answer:
They are codominant.
Explanation:
A and B are both expressed , when they are both inherited.
Answer: PLATO answer:
They are codominant
Explanation: The A and B antigens are equally present on the red blood cells, so the relationship of the A and B genes is codominant.
The center of the cross section of a root contains called
Answer:
pith
Explanation:
The root is from a monocot and this central tissue is called the pith, like what is found in stems.
Are bats blind?Non scientific or scientific question?
Answer:Bats are not blind and can in fact see quite well using their eyes. While most bats do have advanced ears that give them a form of vision in the dark known as echolocation, these good ears does not require them to have bad eye
Unattached earlobes is a dominant trait, E. A parent who is homozygous for unattached earlobes is crossed with a parent who is
homozygous for attached earlobes. Which describes the genotypes of their offspring?
100 percent Ee
100 percent unattached earlobes
100 percent ee
100 percent attached earlobes
Answer:
100 percent Ee
Explanation:
This is a cross involving a single gene coding for attachment or not of earlobes. The allele for unattached earlobes (E) is dominant over the allele for attached earlobe (e). This means that allele E will always mask the phenotypic expression of e in a heterozygous state.
A parent that has same alleles for unattached earlobes i.e. EE is crossed with a parent that has same alleles for attached earlobes i.e. ee. In this cross, all of the offsprings will have a heterozygous genotype, Ee because gametes E and e will be produced respectively by each parent.
Hence, since all of the offsprings will have an Ee genotype, it means 100% of their offsprings will have Ee (HETEROZYGOUS).
Answer:
Its A or 100% Ee
Explanation:
edge 2022
How does Natural selection apply to yourself as an individual? will mark the brainliest answer
Answer:
Natural selection occurs when some of those traits help some individuals survive and reproduce more than others. That causes their genes to become more common in the population over time, and it's the way species evolve to adapt to changes in their environment.
Explanation:
hope this helps =)
What is the main function of the structure labeled A?
It attracts insects and other animals.
It moves the pollen to the ovaries.
It catches pollen.
It produces pollen.
Answer:
D
Explanation:
I did the assignment
The main function of the structure labeled A is it produces pollen. Therefore, the correct option is D.
What is a pollen?Pollen is a microscopic, powdery substance produced by the male reproductive organs of seed plants. It is made up of cells that contain the male gametes (reproductive cells) and is responsible for fertilizing the female reproductive cells (ovules) to produce seeds.
Pollen is often carried from one plant to another by wind, insects, or other animals, where it can then come into contact with the female reproductive organs of a different plant.
If the pollen comes into contact with a receptive ovule, it can fertilize the ovule and produce a seed. Therefore, the correct option is D.
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The question is incomplete, but most probably the complete question is,
What is the main function of the structure labeled A?
A. It attracts insects and other animals.
B. It moves the pollen to the ovaries.
C. It catches pollen.
D. It produces pollen.
A student learns that pure water freezes at 0°C. The student wants to find out how much salt needs to be added to the water to lower the freezing temperature by two degrees. Which statement explains why this question can be answered through scientific inquiry?
The question likely has more than one answer.
The question has already been answered by scientists.
The question can be investigated through a group of experiments.
The question can be answered through mathematical calculations
Answer:
The question can be investigated through a group of experiments.
Explanation:
The question can be investigated through a group of experiments. This statement explains why this question can be answered through scientific inquiry because in science, after a question is asked and an hypothesis is made, experiments are carried out and observed to further verify the accurate measurements.
Think back about your experience in this lab using a dichotomous key. What might make it hard for someone to use a dichotomous key? Make a list of possible reasons.
Answer: why it is hard to use dichotomous key in the lab are;
If the organisms you want to use it for are similar.
If you can't see the little characteristics posses by the organisms you are using it for.
If all the pictures does not reveal all the important features of the organisms.
It is very difficult to use it to determine the anatomical structure.
Explanation:
Dichotomous key is an important method that is use in biology to identify organisms by separating or dividing the organisms into two groups. It is a tool created by scientists to help them identify organisms or objects. Once the organisms are group into two, more information is revealed more individually.
Answer:
The person who commented before me was correct. They should get brainliest. Below is the same thing they wrote just in paragraph form.
If the organisms you want to use it for are similar. If you can't see the little characteristics posses by the organisms you are using it for. If all the pictures does not reveal all the important features of the organisms. It is very difficult to use it to determine the anatomical structure.
Question 5
is to the Calvin cycle.
Chlorophyll is to the light reactions as
O NADP+
O carbon dioxide
O ATP
O ATP synthase
O RuBP