[Campbell Biology P.289] What is the immediate event that marks the beginning of anaphase, a... | Practice Question

What is the immediate event that marks the beginning of anaphase, as described in the text?

  • A: Sister chromatids begin to move toward opposite poles of the cell.
  • B: The centromeres of duplicated chromosomes align on the metaphase plate.
  • C: Cohesins holding sister chromatids together are cleaved by separase.
  • D: The mitotic spindle becomes fully formed and asters contact the plasma membrane.

Explanation

The text explicitly states: 'Anaphase begins suddenly when the cohesins holding together the sister chromatids of each chromosome are cleaved by an enzyme called separase.'