Why are the daughter cells produced by meiosis are genetically different from each other, whereas the....
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Why are the daughter cells produced by meiosis are genetically different from each other, whereas the....

[From: ] [author: ] [Date: 12-03-10] [Hit: ]
so there is genetic recombination in every generation. However there is further recombination when non-sister chromatids align in meiosis I and cross over segments so allele linkages within chromosomes are broken.......
Explain why the daughter cells produced by meiosis are genetically different from each other, whereas the daughter cells produced by mitosis are not.

Thankyou!

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Because in prophase 1 of meiosis, the chromosomes synapse which results in chromosomes having each other genes. This is called cross-over. Also in metaphase 1 of meiosis, the chromosomes line up randomly at the equator of the cell, making them all different from one another. This is called independent assortment. Mitosis however, do not do this and once it replicates the DNA in S phase of interphase, it remains the same through out the whole process of mitosis.

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Meiosis randomly assorts the homologous chromosomes pairs so they do not pass on as linked genomic sets, so there is genetic recombination in every generation. However there is further recombination when non-sister chromatids align in meiosis I and cross over segments so allele linkages within chromosomes are broken.
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