[Campbell Biology P.309] What is the key event of Anaphase I that differs from Anaphase in m... | Practice Question

What is the key event of Anaphase I that differs from Anaphase in mitosis?

  • A: The chromosomes condense and become visible.
  • B: Homologous chromosomes separate, but sister chromatids remain attached.
  • C: Sister chromatids separate and move to opposite poles.
  • D: The nuclear envelope re-forms around the chromosomes.

Explanation

The diagram and text for Anaphase I clearly state that the 'Homologous chromosomes separate' and move to opposite poles, while 'Sister chromatid cohesion persists at the centromere'. In contrast, during anaphase of mitosis, the sister chromatids themselves separate.