Which of the following events does not occur during prophase of mitosis?
A) The nucleolus and the nuclear membrane disintegrate.
B) Each chromosome replicates so that it becomes a double-stranded structure.
C) Centrosomes start to form the mitotic spindle.
D) Chromosomes become visible due to the shortening and condensation of chromatin.

Question

Quizplus · Accepted Answer

Chromosome replication occurs during the S phase of interphase, not during prophase of mitosis. In prophase, chromosomes are already replicated and begin to condense.

Which of the Following Events Does Not Occur During Prophase