SSC MTS EXAM

SSC

BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The shortest stage of mitosis. Begins with the two sister chromatids of each pair suddenly part. Each chromatid thus becomes a chromosome. What phase is this?
A
Telophase
B
Anaphase
C
Prophase
D
Metaphase
Explanation: 

Detailed explanation-1: -In anaphase, the shortest stage of mitosis, the sister chromatids break apart, and the chromosomes begin moving to opposite ends of the cell. By the end of anaphase, the 2 halves of the cell have an equivalent collection of chromosomes. In telophase, 2 daughter nuclei form.

Detailed explanation-2: -During S phase, each chromosome is replicated. This produces a second copy of each chromosome from the mother and a second copy of each chromosome from the father. These identical copies are known as sister chromatids.

Detailed explanation-3: -Metaphase leads to anaphase, during which each chromosome’s sister chromatids separate and move to opposite poles of the cell. Enzymatic breakdown of cohesin-which linked the sister chromatids together during prophase-causes this separation to occur.

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