Multiple Choice
DNA methylation is most commonly observed in which group of eukaryotes?
13. Gene Regulation in Eukaryotes
Epigenetics, Chromatin Modifications, and Regulation
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Which of the following is most closely associated with the idea of epigenetics?
A
Heritable changes in gene expression that do not involve changes to the DNA sequence
B
Changes in the amino acid sequence of a protein
C
Mutations in the coding region of a gene
D
Recombination during meiosis
Verified step by step guidance1
Understand the definition of epigenetics: it refers to heritable changes in gene expression that do not involve alterations in the underlying DNA sequence.
Recognize that changes in the amino acid sequence of a protein result from mutations or variations in the DNA sequence, which is different from epigenetic changes.
Identify that mutations in the coding region of a gene directly alter the DNA sequence, so they are not considered epigenetic.
Note that recombination during meiosis involves the physical exchange of DNA segments, changing the genetic sequence, and thus is not related to epigenetics.
Conclude that the option describing heritable changes in gene expression without changes to the DNA sequence best fits the concept of epigenetics.
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