CELL DIVISION
THE CELL CYCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Half the number of the original cell
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The same number as the original cell
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Twice as much as the original cell
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Detailed explanation-1: -At the end of mitosis, the two daughter cells will be exact copies of the original cell. Each daughter cell will have 30 chromosomes. At the end of meiosis II, each cell (i.e., gamete) would have half the original number of chromosomes, that is, 15 chromosomes.
Detailed explanation-2: -So during a mitotic cell cycle, the DNA content per chromosome doubles during S phase (each chromosome starts as one chromatid, then becomes a pair of identical sister chromatids during S phase), but the chromosome number stays the same.
Detailed explanation-3: -Once mitosis is complete, the cell has two groups of 46 chromosomes, each enclosed with their own nuclear membrane. The cell then splits in two by a process called cytokinesis, creating two clones of the original cell, each with 46 monovalent chromosomes.
Detailed explanation-4: -The last stage is telophase in which the cell divides into two cells. Both the daughter cells after the telophase stage will have the same number of chromosomes. When there are 46 chromosomes at the initial stage of mitosis, then daughter cells will have 46 chromosomes.
Detailed explanation-5: -A human body cell begins mitosis with 46 chromosomes (23 pairs). At the end of mitosis, 2 daughter cells both have 46 chromosomes.