Which statement is true?(1 point)

Genetic and epigenetic changes can be explained by DNA structure.

Epigenetic changes cannot be explained by DNA structure, but genetic changes can.

Epigenetic changes can be explained by DNA structure, but genetic changes cannot.

Genetic and epigenetic changes cannot be explained by DNA structure.

Epigenetics can be defined as any heritable phenotypic change that does not involve an alteration in the DNA sequence. Epigenetic mechanisms include DNA methylation, histone modifications (e.g., histone acetylation, histone methylation, etc) and regulatory non-coding RNAs (ncRNAs) pathways such as, for example, long non-coding RNA (lncRNA) pathways, small interfering RNA (siRNA) pathways, microRNA (miRNA) pathways, etc. These epigenetic mechanisms work together to modulate gene expression patterns by activating and suppressing specific genes.

ayfat23 ayfat23 · Answer 2 · 2021-12-03T14:15:55+01:00

Statement that is true as regards this question is :B: Epigenetic changes cannot be explained by DNA structure, but genetic changes can.

Epigenetics can be regarded as the study of how behaviors as well as environment of individuals can bring changes that affect the way in which their genes work.

Unlike genetic changes, epigenetic changes can be reversed because it doesn't change the DNA sequence. So using DNA structure, genetic changes can be explained unlike epigenetics.

Therefore, option B is correct.

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