Scelta multipla
During which phase of meiosis does crossing over occur?
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12. Meiosis
Introduction to Meiosis
Scelta multipla
Meiosis produces cells with how many chromosomes compared to the original cell?
A
One-fourth the number of chromosomes
B
Twice the number of chromosomes
C
The same number of chromosomes
D
Half the number of chromosomes
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Understand that meiosis is a type of cell division that reduces the chromosome number by half, creating four haploid cells from one diploid cell.
Recall that a diploid cell contains two sets of chromosomes, one from each parent, while a haploid cell contains only one set of chromosomes.
During meiosis, the process involves two rounds of division: meiosis I and meiosis II. Meiosis I is where the chromosome number is halved.
In meiosis I, homologous chromosomes are separated into two different cells, reducing the chromosome number by half.
Therefore, the cells produced by meiosis have half the number of chromosomes compared to the original diploid cell.
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