Scelta multipla
Which step in meiosis is characterized by homologous chromosomes pairing and exchanging genetic material?
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12. Meiosis
Introduction to Meiosis
Scelta multipla
What are the results of meiosis in terms of the number and type of cells produced?
A
Two genetically identical haploid cells
B
Four genetically identical diploid cells
C
Four genetically diverse haploid cells
D
Two genetically diverse diploid cells
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Understand that meiosis is a type of cell division that reduces the chromosome number by half, resulting in the production of haploid cells from a diploid cell.
Recall that meiosis consists of two consecutive divisions: meiosis I and meiosis II. Each division has its own phases: prophase, metaphase, anaphase, and telophase.
During meiosis I, homologous chromosomes are separated, resulting in two haploid cells, each with half the number of chromosomes, but still consisting of sister chromatids.
In meiosis II, the sister chromatids are separated, similar to mitosis, resulting in four haploid cells. Each of these cells has a unique combination of genes due to the process of crossing over and independent assortment that occurs during meiosis I.
Conclude that the result of meiosis is four genetically diverse haploid cells, which is essential for sexual reproduction and genetic diversity.
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