[Campbell Biology P.421] Which of the following statements accurately describes epigenetic i... | Practice Question

Which of the following statements accurately describes epigenetic inheritance as discussed in the provided text?

  • A: It involves permanent changes to the DNA nucleotide sequence.
  • B: It refers to modifications to chromatin that are passed to future generations without altering the DNA sequence.
  • C: It is exclusively reestablished during gamete formation and not affected by environmental conditions.
  • D: Unlike DNA mutations, epigenetic changes are always irreversible.

Explanation

Epigenetic inheritance refers to chromatin modifications that do not change the DNA sequence but are still passed down to future generations of cells. These modifications can be reversed, unlike permanent DNA mutations, and are responsive to environmental conditions.