Which of the following statements is true?

(a) Anaphase A must be completed before anaphase B can take place.
(b) In cells in which anaphase B predominates, the spindle will elongate much less than in cells in which anaphase A dominates.
(c) In anaphase A, both kinetochore and interpolar microtubules shorten.
(d) In anaphase B, microtubules associated with the cell cortex shorten.


Choice (d) is correct. Anaphase A and anaphase B generally occur at the same time [choice (a)]. In cells in which anaphase B predominates, the spindle will elongate more than in cells in which anaphase A predominates [choice (b)]. In anaphase A, only the kinetochore microtubules shorten [choice (c)].

Biology & Microbiology

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