Describe the epigenetic impact on population health risks
In,epigeneticsis the study ofchanges that do not involve alterations in the.Theprefix(“over, outside of, around”) inepigeneticsimplies features that are “on top of” or “in addition to” the traditionalbasis for inheritance.Epigenetics most often involves changes that affect gene activity and, but the term can also be used to describe any heritable phenotypic change. Such effects onandmay result from external orfactors, or be part of normal development.
The term also refers to the changes themselves: functionally relevant changes to thethat do not involve a change in the. Examples of mechanisms that produce such changes areand, each of which alters how genes are expressed without altering the underlyingsequence. Gene expression can be controlled through the action ofthat attach toregions of the DNA. These epigenetic changes may last throughfor the duration of the cell’s life, and may also last for multiple generations, even though they do not involve changes in the underlying DNA sequence of the organism;instead, non-genetic factors cause the organism’s genes to behave (or “express themselves”) differently.
One example of an epigenetic change inbiology is the process of. During,become the variousof the, which in turn become fully differentiated cells. In other words, as a single fertilized the continues to, the resulting daughter cells change into all the different cell types in an organism, including,,,of, etc., by activating some genes while inhibiting the expression of others.