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SlideshowReport

Epigenetics

Description
Epigenetic mechanisms of modifying gene expression. The epigenome can mark DNA in two ways, both of which play a role in turning genes off or on. The first occurs when certain chemical tags called methyl groups attach to the backbone of a DNA molecule. The second occurs when a variety of chemical tags attach to the tails of histones, which are spool-like proteins that package DNA neatly into chromosomes. This action affects how tightly DNA is wound around the histones

The chromosome is shaped like the letter X. The chromosome has a strand of chromatin issuing, which is composed of methyl groups. A small body marked methyl group is shown to be attached to the chromatin strand in the first means of turning genes on and off. Etc. This leads to genes, including genes that are active because the D N A is accessible, and those that are inactive due to inaccessible D N A, and histones, which lead to histone tails, which lead to D N A. Epigenetic factors attach to various genes.

Epigenetic mechanisms, affected by, are listed as follows. development (in utero or childhood), environmental chemicals. drugs or pharmaceuticals, aging, and diet.

The health endpoints of these mechanisms are listed as follows. cancer, autoimmune disease, mental disorders, and diabetes.
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