Question

in what phase of mitosis do sister chromatids of each chromosome separate resulting in two sets of identical chromosomes?
a \tanaphase
b \tprophase
c \tmetaphase
d \ttelophase

Explanation:

To solve this, we recall the phases of mitosis:

• Prophase: Chromosomes condense, spindle forms. Sister chromatids don't separate here.
• Metaphase: Chromosomes align at the equator. No separation of sister chromatids.
• Anaphase: Sister chromatids are pulled apart to opposite poles, forming two sets of identical chromosomes.
• Telophase: Chromosomes decondense, nuclear envelopes reform. Separation has already occurred.

So the phase where sister chromatids separate is Anaphase.

Answer:

a. Anaphase