Genes and environmental forces shape development, thereby many human characteristics are EPIGENETIC. This field (epigenetics) is the intersection between genes and the environment.
Epigenetics refers to the study of gene expression patterns that do not involve a change in the nucleotide (DNA) sequence.
Epigenetic mechanisms include DNA methylation, histone modifications and non-coding regulatory RNA pathways.
These epigenetic mechanisms work together with environmental factors to shape the development.
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