Alteration of histones by addition of methyl and acetyl groups to particular amino acids Alteration of histones by addition of methyl and acetyl groups to particular amino acids results in the remodeling of chromatin that can activate or inhibit gene expression. changes B-DNA to Z-DNA. helps preserve telomeres during DNA replication. alters the denaturation and renaturation of DNA. creates G bands seen after Giemsa staining of chromosomes.

results in the remodeling of chromatin that can activate or inhibit gene expression

Explanation:

In a similar mode to the DNA methylation, different types of histone modifications (including, among others, methylation, acetylation, ribosilation, phosphorylation, etc) can regulate gene expression patterns. Both DNA and histone modifications are epigenetic hallmarks capable of modulating chromatin organization and consequently also the accessibility to transcription factors, thereby having effects on gene expression. In this regard, it is important to note that regulatory non-coding RNA molecules can also epigenetically regulate gene expression.

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