5
Question
A cheek cell which has just completed the S phase of the cell cycle will have
A cheek cell which has just completed the S phase of the cell cycle will have
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Solution
The correct option is C 2n chromosomes and 4x amount of DNA compared to the gametes
If you assume the number of chromosomes to be N and amount of DNA to be X, then a gamete cell would have 1N, 1X. Two gametes fuse to form a zygote that has 2N, 2X. The zygote would undergo many mitotic divisions to give a cheek cell which would also have 2N, 2X. If this cell were to undergo S phase, then the number would change to 2N, 4X.
If you assume the number of chromosomes to be N and amount of DNA to be X, then a gamete cell would have 1N, 1X. Two gametes fuse to form a zygote that has 2N, 2X. The zygote would undergo many mitotic divisions to give a cheek cell which would also have 2N, 2X. If this cell were to undergo S phase, then the number would change to 2N, 4X.
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