First slide

M Phase

Question

How many chromatids are present in the chromosomes during metaphase and G₁ phase of the cell cycle?

Easy

A

Metaphase- 4 chromatids, G₁ phase- 2 chromatids
B

Metaphase- 2 chromatids, G₁ phase- 1 chromatid
C

Metaphase- 4 chromatids, G₁ phase- 4 chromatids
D

Metaphase- 8 chromatids, G₁ phase- 4 chromatids

Solution

The metaphase chromosomes has two sister chromatids attached at the same centromere. During the G₁ phase, the DNA did not undergo replication and therefore has only one chromatid per chromosome.

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