Scelta multipla
How many cells are formed at the end of meiosis?
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12. Meiosis
Introduction to Meiosis
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What happens to the number of chromosomes during meiosis?
A
The number of chromosomes is halved.
B
The number of chromosomes triples.
C
The number of chromosomes remains the same.
D
The number of chromosomes doubles.
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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. In humans, this is 46 chromosomes.
During meiosis, the cell undergoes two rounds of division: meiosis I and meiosis II.
In meiosis I, homologous chromosomes are separated, reducing the chromosome number by half. This results in two cells, each with half the original number of chromosomes.
In meiosis II, the sister chromatids are separated, but the chromosome number remains the same as after meiosis I. Thus, the final result is four haploid cells, each with half the original number of chromosomes.
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