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Examples Of Epigenetics

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The term epigenetics was first used by C. H. Waddington in 1942 as part of his model to connect genotypes and phenotypes during biological development. In contemporary use, it usually refers to the idea that other things besides DNA sequence can affect the developmental process of an organism. An example of this is DNA methylation, when methyl groups are added to DNA molecules. These methyl groups typically act by suppressing the transcription of certain genes, thus altering gene expression without modifying the underlying DNA.
A perfect example of epigenetics is the development of the brain, more than any other organ. The brain has over one hundred billion neurons and one hundred trillion synaptic connections, meaning that no two brains

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