Epigenetics can influence gene expression from "summary" of It Didn't Start with You by Mark Wolynn
Epigenetics can influence gene expression. This means that the way our genes are expressed can be influenced by factors beyond the DNA sequence itself. While our genes provide the blueprint for our physical traits and biological functions, epigenetic factors can determine which genes are turned on or off, and to what extent. One of the ways epigenetics can influence gene expression is through DNA methylation. This process involves the addition of methyl groups to the DNA molecule, which can change the way genes are expressed without altering the underlying genetic code. By adding or removing methyl groups from specific genes, the body can regulate their expression in response to environmental cues. Another epigenetic mechanism that can influence gene expression is histone modification. Histones are proteins that help package DNA into a compact structure within the cell nucleus. By adding chemical tags to histone proteins, the cell can control how tightly or loosely the DNA is packaged, affecting the accessibility of genes for transcription. In addition to DNA methylation and histone modification, non-coding RNAs also play a role in epigenetic regulation of gene expression. T...
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