Epigenetics are variations in gene expression that does not contain
changes to the principal DNA sequence. Therefore, it is a alteration in
phenotype without a modification in genotype. With this, all traits
are considered epigenetic, the production of genetic and non-genetic effects,
begins with methylation at conception, which will then continue throughout the
life.
1the atmosphere<span> also protects living </span>things<span> on Earth from the sun's harmful ultraviolet radiation. 2</span>tmosphere filters out these dangerous rays. 3The atmosphere<span> also helps to sustain life of Earth. .4blocks harmful electromagnetic 5.provide oxgen</span>