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Romashka-Z-Leto [24]
2 years ago
5

True or False: Mollusks have a heart and a closed circulatory system

Biology
1 answer:
ycow [4]2 years ago
5 0
False. They have an open <span>circulatory system</span>
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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.

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