Question

Epigenetic changes are generally (1 point)

Answer 1

Epigenetic changes are generally heritable changes in the regulation of the activity and expression of genes by action of external factors, which do not cause alterations in the order of the sequence of the nitrogenous bases of DNA.

Epigenetic changes aims to explain why living organisms express some genes and silence others, in order to shape their particular physical characteristics and the susceptibility to developing certain diseases.

• These changes in gene expression then imply heritable changes in the phenotype.

• The traditional mechanisms of epigenetic changes include DNA methylation and histone modifications, understanding the proteins as those in charge of packaging DNA.

Therefore, we can conclude that epigenetic changes allow us to explain the way in which phenomena and processes not dependent on the sequence of our DNA can regulate the expression of our genes.

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Answer 2

Answer:

heritable "on/off switches" for gene sequences due to environmental factors.

Explanation:

Epigenetic changes are generally heritable "on/off switches" for gene sequences due to environmental factors.