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Murljashka [212]
3 years ago
14

A good scientific theory:

Biology
2 answers:
siniylev [52]3 years ago
5 0
The answer is ("B" - is the foundation of the scientific method.)
netineya [11]3 years ago
4 0
I would have to say none of the above. B is probably the correct answer, but even this does not truly make sense as an answer. At least that is not what I would say at first. A scientific theory is an explanation for phenomenon in the universe.
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The correct answers are:  

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Histone modifications are post-translational modifications of histone protein that can affect gene expression by altering chromatin structure or recruiting histone modifiers.The most common modifications are methylation, phosphorylation, acetylation and ubiquitylation. All of them affect the binding affinity between histones and DNA and thus loosening (gene activation) or tightening (gene repression) the condensed DNA.

Histone methylation is a transfer of methyl group by histone methyltransferases to lysine or arginine amino acid of protein. Effect of methylation depends on the type of protein that is modified. Demethylation is the reverse process.

Histone acetylation is the process of adding of an acetyl group(by  histone acetyltransferases) to histone proteins and it can also activate or inhibit the gene expression. Deacetilation is reverse process.

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I hope this helps please mark as brainliest :)

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How are mosses and horsetails similar to ferns
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vekshin1

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Explanation:

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