Which of the following makes epigenetics difficult to study
a. It does not depend on the nucleotide sequence of the DNA.
b. It is hard to sequence the entire human genome.
c. It is not heritable.
d. DNA sequences mutate too quickly to track changes.
Answer: a. It does not depend on the nucleotide sequence of the DNA
Explanation: Epigenetics does not alter the DNA sequence but still alter the phenotype. These involve factors like DNA methylation or other chemical modifications that can influence gene expression.
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