The field of deals with changes in organisms due to changes in gene expression rather than changes in the genetic code.

The field of epigenetics deals with changes in organisms due to changes in gene expression rather than changes in the genetic code.

Epigenetics

Explanation:

Epigenetics deals mainly with changes that come about as a result of changes in the gene expression including gene products. These changes do not occur as a result of changes in the genetic code. It mainly studies modifications made to gene expression. These include DNA methylation: addition of a methyl group to a region on the DNA molecule preventing some genes from being expressed. Another is Histone modifications: Acetylation, methylation, phosporylation, etc

All these either help in activating transcription or deactivate transcription.

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