Biology

The correct answer is: B.Chromosome condensation

The transition from interphase to mitosis is marked by chromosome condensation. During interphase, the DNA exists as loosely organized chromatin. As the cell enters prophase (the first stage of mitosis), the chromatin condenses into visible chromosomes, signaling the start of mitosis.

Here’s why the other options are incorrect:

A.Chromosome duplication: Chromosome duplication (or DNA replication) occurs during the S phase of interphase, not at the transition to mitosis. It ensures that each chromosome is made of two...