LABORATORY REVIEW
MITOSIS AND MEIOSIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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12
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6
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24
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2
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Detailed explanation-1: -There is doubling of the chromatids but the chromosomes number remains same. The number of chromosomes in the G2 phase will be same as 12 chromosomes and the number of chromatids will be 24.
Detailed explanation-2: -During the G2 phase the cell has already undergone DNA replication (in the S phase). Each of the chromosomes will therefore have identical sister chromatids. There will be 92 sister chromatids, but only 46 chromosomes.
Detailed explanation-3: -In the process of mitosis, there is no change in the number of chromosomes. The phase at which a cell prepares for division is called interphase. If the cells have 12 chromosomes during interphase, the number of chromosomes will be retained as 12 in each of the daughter cells even after the completion of mitosis.
Detailed explanation-4: -The number of chromosomes in G1 phase of cell cycle is 24.
Detailed explanation-5: -There are 92 chromosomes in a human somatic cell during G2. G2 is gap 2 phase and is where the cell gets ready for cell division, or mitosis.