What does the epigenome consist of?

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Multiple Choice

What does the epigenome consist of?

Explanation:
The epigenome is the set of chemical modifications attached to DNA and its associated proteins that control which genes are turned on or off without changing the DNA sequence itself. These chemical marks—like DNA methylation and various histone modifications—change how tightly DNA is packaged and how accessible genes are to the cellular machinery that reads them. They act as switches that determine which traits in the DNA sequence get expressed, and they can be added, removed, or altered in response to development, environment, or cell type. The DNA sequence remains the same, while the epigenetic marks decide which parts are read and expressed.

The epigenome is the set of chemical modifications attached to DNA and its associated proteins that control which genes are turned on or off without changing the DNA sequence itself. These chemical marks—like DNA methylation and various histone modifications—change how tightly DNA is packaged and how accessible genes are to the cellular machinery that reads them. They act as switches that determine which traits in the DNA sequence get expressed, and they can be added, removed, or altered in response to development, environment, or cell type. The DNA sequence remains the same, while the epigenetic marks decide which parts are read and expressed.

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