객관식
During which phase of the cell cycle are chromosomes replicated?
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9. Mitosis and Meiosis
Mitosis
객관식
Which of the following best describes the effect of mitosis on chromosome number in daughter cells?
A
Mitosis produces daughter cells with the same chromosome number as the parent cell.
B
Mitosis results in daughter cells with a random chromosome number.
C
Mitosis reduces the chromosome number by half in daughter cells.
D
Mitosis doubles the chromosome number in daughter cells.
검증된 단계별 안내1
Step 1: Understand the purpose of mitosis. Mitosis is a type of cell division that results in two daughter cells, each genetically identical to the parent cell.
Step 2: Recall that chromosome number refers to the total number of chromosomes present in a cell. In humans, for example, this number is 46 in somatic cells.
Step 3: During mitosis, the chromosomes are duplicated during the S phase of the cell cycle, so each chromosome consists of two sister chromatids before division.
Step 4: In mitosis, the sister chromatids are separated into two new nuclei, ensuring each daughter cell receives one copy of each chromosome, maintaining the original chromosome number.
Step 5: Therefore, mitosis produces daughter cells with the same chromosome number as the parent cell, neither reducing nor increasing it.
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