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Umnica [9.8K]
4 years ago
15

What two conditions must be true for a group of animals to be considered the same species?

Biology
1 answer:
Helga [31]4 years ago
4 0
The two conditions that must be true for a group of animals that is to be considered by the same species, in spite of their intraspecific variation, is that animals can produce and reproduce, having a fertile offspring that can continue to reproduce.
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Which statements about the modification of chromatin structure in eukaryotes are true? Select all that apply. View Available Hin
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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.

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***
statuscvo [17]

Biological procession ?

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