LABORATORY REVIEW
MITOSIS AND MEIOSIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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one full set of chromosomes, each a single chromatid
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two full sets of chromosomes, each with two chromatids
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two full sets of chromosomes, each with a single chromatid
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one full set of chromosomes, each with two chromatids
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Detailed explanation-1: -During meiosis II, each cell containing 46 chromatids yields two cells, each with 23 chromosomes. Originally, there were two cells that underwent meiosis II; therefore, the result of meiosis II is four cells, each with 23 chromosomes.
Detailed explanation-2: -Telophase II: During telophase II, cell division begins again in each of the two daughter cells, creating 4 daughter cells. Each of these 4 daughter cells contains 23 chromosomes, making them haploid, and none of the 4 is exactly alike (due to crossing over and independent assortment).
Detailed explanation-3: -After meiosis II, when each parent cell gets divided into two gametes each gamete cell contains 23 chromosomes. In this phase, each gamete remains haploid in nature. At the end of meiosis II, each cell will have the half number of the actual chromosome i.e. 23 chromosomes.
Detailed explanation-4: -We produce gametes by meiotic cell division. We reduce the number of chromosomes to one half. And not just any half. Each of the four cells produced by meiosis has all of the 23 chromosomes, half a set of homologous pairs.