Multiple Choice
In meiosis, what is the specific purpose of meiosis I?
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9. Mitosis and Meiosis
Meiosis
Multiple Choice
During meiosis, what happens to the chromosome number when a diploid germ cell produces gametes?
A
It increases by one set of chromosomes due to DNA replication.
B
It is reduced by half, producing haploid cells.
C
It remains the same, producing diploid gametes.
D
It doubles, producing tetraploid cells.
Verified step by step guidance1
Understand that meiosis is a special type of cell division that reduces the chromosome number by half to produce gametes (sperm and egg cells).
Recall that a diploid (2n) cell contains two sets of chromosomes, one from each parent.
During meiosis, the cell undergoes one round of DNA replication followed by two rounds of cell division (meiosis I and meiosis II).
The key outcome is that the chromosome number is halved, so each gamete ends up with only one set of chromosomes, making them haploid (n).
Therefore, the chromosome number is reduced by half during meiosis, ensuring that when two gametes fuse during fertilization, the diploid number is restored.
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