CELL STRUCTURES AND FUNCTION
CELL DIVISION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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DNA replication during the S phase of the cell cycle
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Growth during G2 of the cell cycle
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DNA replication during the M phase of the cell cycle
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During cytokinesis
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Recombination during Prophase I of meiosis
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Detailed explanation-1: -A full set of sister chromatids is created during the synthesis (S) phase of interphase, when all the chromosomes in a cell are replicated. The two sister chromatids are separated from each other into two different cells during mitosis or during the second division of meiosis.
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. These sister chromatids are held together by the centromere.
Detailed explanation-3: -During the S phase of the cell cycle, DNA replication generates a pair of sister chromatids with identical genetic content. The sister chromatids must be physically connected through the G2 phase and will only begin to separate during the transition from metaphase to anaphase during mitosis.
Detailed explanation-4: -S phase is the period during which DNA replication occurs.
Detailed explanation-5: -S phase. In S phase, the cell synthesizes a complete copy of the DNA in its nucleus. It also duplicates a microtubule-organizing structure called the centrosome.