How does epigenetics affect genes?
1 Answer
epigenetics is the changes caused in an organism by regulating the genes rather than changing the DNA sequence.
Explanation:
genes require the stimulus signal for getting transcribed and then do the job they are good at. but the epigenetic regulates how, when and how much of the gene is regulated by network in the cell. epigenetics does not stop at how the genes are being regulated by other genes it also include how the chromatin is being modified during the course of cell life.
simple example will include use of three genes
gene a, gene b and gene c.
these three genes are regulated in the following manner
gene a requires the product of gene b to interact with the promoter region of the gene. gene c when expressed can cause change in structure of gene b in such a manner it will not be able to interact with the promoter region of gene a.
Read the interaction scheme couple of time till you get it.
here gene c is epigenetically regulating the expression of gene a, as it is not interacting with gene a but causing a change in one of the factor which contributes to the expression of gene a.
i would suggest watching this video till 2 minute for further clarification do not watch after 2 minutes or you will waste time
