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Module 1: Biología: Meiosis

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XSIQ
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Biology - Meiosis

Meiosis

If gametes [1] were produced in the same way as daughter cells in mitosis,
there would be a doubling of the chromosome [2] number at fertilisation.
The process of meiosis ensures that, normally, the gametes have only half
the number of chromosomes, that is one of each homologous [3] pair in each
gamete (the haploid [4] number). Meiosis is therefore a reduction division.
During meiosis the homologous chromosomes of diploid [5] cells separate. In
humans, somatic cells [6] contain 46 chromosomes (the diploid number) but
sperm and ova contain 23 chromosomes (the haploid [7] number).

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[1] http://alison.com/#
[2] http://alison.com/#
[3] http://alison.com/#
[4] http://alison.com/#
[5] http://alison.com/#
[6] http://alison.com/#
[7] http://alison.com/#