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Nataly [62]
3 years ago
5

What would be required to prove that a phenotype is caused by an epigenetic change?A-The phenotype must be heritable with modifi

ed chromatin and an unaltered nucleotide sequence.B-The phenotype must be unexplained by known genetic mechanisms.C-The phenotype must be the result of a nucleotide change that is present in one gender but not the other.D-The phenotype must be passed to progeny only through the maternal DNA.E-The phenotype must be reversible in the presence of mutagenic compounds.
Biology
1 answer:
wel3 years ago
3 0

Answer:

Option (A).

Explanation:

Epigenetics may be defined as the study of the heritable phenotype changes that do not change the sequence of DNA. The gene activity or gene expression changes in epigenetics. Environment may also brings the changes in gene expression.

The change in phenotype of the individual must be inherited in epigenetic changes. The chromatin must be modified but the nucleotide sequence remains unaltered in epigenetic changes.

Thus, the correct answer is option (A).

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How would expect the biomass to change after ten days if seeds and plants were provided the following conditions?
atroni [7]

Answer:

La biomasa (energía) se refiere a la biomasa «útil» en términos energéticos formales: las plantas transforman la energía radiante del Sol en energía química a través de la fotosíntesis, y parte de esa energía química queda almacenada en forma de materia orgánica; la energía química de la biomasa puede recuperarse quemándola directamente o transformándola en combustible.

Explanation:

8 0
3 years ago
4. Which event would be the most predictable one year in advance of the event?
Black_prince [1.1K]

Answer:

1. an eclipse of the Sun

2. state (phase) of matter

3. 5.0 g/cm3

Explanation:

1. Eclipse of the sun occurs when the planetary bodies align in such a way that causes the moon to block sunlight from reaching the Earth. The eclipse of the Sun will be the most predictable occurrence because it follows a pattern of occurrence. Eclipse of the sun occurs after a specific period of time, hence, based on this, scientists can predict that when it will occur next using its previous pattern of occurrence.

2. Considering the following groups: Group A: water, aluminum, water vapor

Group B: gasoline, ice, air

Group C: alcohol, iron, oxygen

One would realize that each constituent of each group exists in a particular state of matter. For example, in group B, gasoline is a liquid, ice is a solid while air is a gaseous mixture. Same applies for group A and C where water and alcohol are liquids, iron and aluminum are solids, while water vapor and oxygen are gases.

This shows that the STATE (PHASE) OF MATTER was the basis of classification.

3.

6 0
3 years ago
Which level on on the pyramid will have the most amount of energy?
serious [3.7K]

Answer:

<em>Hello, In all the ecological pyramids, producers (organisms that produce their own food) are found at the lowest trophic level. This trophic level contains the highest amount of energy. The energy in each trophic level of an energy pyramid is just 10 percent of the energy in the level below it. (Why is there less energy available at the top of an energy pyramid than at the bottom?) Less energy is available to organisms in the upper levels because each organism releases some of the chemical energy in food to the air as thermal energy. Less total energy is available with each step up energy pyramid. Hope That Helps!</em>

5 0
3 years ago
PLEASE HELP!! <br><br> How is a karyotype useful?
Firlakuza [10]
Karyotyping can be used to detect a variety of genetic disorders. For example, a woman who has premature ovarian failure may have a chromosomal defect that karyotyping can pinpoint. The test is also useful for identifying the Philadelphia chromosome. Hope this helps :)
3 0
3 years ago
Does the appearance (how they look) suggest common ancestry between the minnow and the cave fish?
ch4aika [34]
No, because two creatures with similar niches can evolve similar traits and appearances despite not having a common ancestor.
3 0
3 years ago
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