객관식
Which of the following events occurs during Prophase I of meiosis?
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12. Meiosis
Introduction to Meiosis
객관식
In a diploid organism, how many copies of each chromosome are present in the parent cell prior to undergoing meiosis?
A
Two copies
B
One copy
C
Three copies
D
Four copies
검증된 단계별 안내1
Understand that a diploid organism has two sets of chromosomes, one from each parent.
Recall that in diploid organisms, each chromosome is present in pairs, known as homologous chromosomes.
Before meiosis begins, the parent cell is in the interphase stage, where DNA replication occurs.
During interphase, each chromosome is replicated, resulting in two identical sister chromatids for each chromosome.
Thus, prior to meiosis, the parent cell contains two copies of each chromosome, one from each homologous pair.
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