Which of the Following Is an Example of an Epigenetic

question 22

Multiple Choice

Which of the following is an example of an epigenetic change in eukaryotes?

• A)A loss of an AT base pair from a gene
• B)The addition of methyl groups to cytosines in the promoter region of a gene
• C)The substitution of an AT base pair by a GC base pair in a gene as a result of a mistake during DNA replication
• D)A deletion that simultaneously removes two genes from the genome
• E)None of the above represents epigenetic changes.

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Definitions:

Neuron Cells

Specialized cells of the nervous system that transmit electrical and chemical signals throughout the body, facilitating communication between the brain and other parts.

GTP

Guanosine triphosphate, a nucleotide important for energy transfer within cells and a substrate for protein synthesis.

GDP

Gross Domestic Product, a measure of the economic performance of a country, calculated by adding the total value of all goods and services produced within the country.

G Protein

Guanine nucleotide-binding proteins that act as molecular switches inside cells, involved in transmitting signals from a variety of stimuli outside a cell to its interior.