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fomenos
2 years ago
9

Addition of a(n) _____ group to certain lysine residues of a histone protein makes the region of chromatin transcriptionally ___

__; addition of a(n) _____ group to certain lysine residues makes the region of chromatin transcriptionally _____.
Biology
1 answer:
Alex Ar [27]2 years ago
6 0

Answer:

Addition of a(n) methyl group to certain lysine residues of a histone protein makes the region of chromatin transcriptionally silent; addition of a(n) acetyl group to certain lysine residues makes the region of chromatin transcriptionally active.

Explanation:

The changes suffered in the expression and activity of the genes are studied by the Epigenetics.

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Scientific investigations often lead to the formulation of new scientific questions. charle’s darwin reviewed his observations a
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Can evolution create new species over time through natural selection?

is the question he would be prompted to ask based on his voyage.

<h3>Who was Charles Darwin ?</h3>
  • English scientist Charles Darwin gained notoriety for his theory of natural selection, which postulated that organisms in an ecosystem adapt and evolve in order to maintain their survival.
  • Because of this, Darwin was inspired to consider whether natural selection can eventually result in the emergence of new species after studying the selective breeding of pigeons.
  • Darwin came to the following conclusion based on these straightforward observations:
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2 years ago
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How does Fluid balance maintain homeostasis
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Answer: ^ that’s right
4 0
2 years ago
If Plant A with yellow flower (dominant trait) is crossed with Plant B white flower (recessive trait), what is the percentage of
marysya [2.9K]

Answer:

100%

Explanation:

Yellow flower color (Y) is dominant over white flower color (y). Plant A is YY while plant B is yy:

       YY    x    yy

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All the offspring would have Yy genotype and since Y is dominant over y, all of them will have yellow flower color as opposed to while.

<em>Hence, the percentage of the offspring that will have a yellow flower would be </em><em>100%.</em>

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Why did Mendel's research succeed in clarifying the features of gene segregation among offspring where others had failed?
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Because it proves the fertilization was impossible
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An example of a parallel choices in a key is
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The answer would be "<span>A. flower color is red; AA. flower color is blue" where the choice is parallel. </span>
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