Biology Ch. 10- Meiosis
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15 terms
Terms | Definitions |
|---|---|
 meiosis | cell division that produces reproductive cells in sexually reproducing organisms |
| gametes | sex cells |
| homologous chromosomes | chromosomes that have the same sequence of genes and the same structure |
| crossing over | exchange of genetic material between homologous chromosomes during prophase I of meiosis |
| meiosis I | The first division of a two-stage process of cell division in sexually reproducing organisms that results in cells with half the chromosome number of the original cell |
| meiosis II | the second phase of meiosis consisting of chromatids separating, along with the two diploid cells splitting in two |
| genetic recombination | the regrouping of genes in an offspring that results in a genetic makeup that is different from that of the parents |
| spermatogenesis | the production of sperm cells |
| primary spermatocyte | 2n cell in the male that undergoes meiosis |
| sperm | the male reproductive cell |
| oogenesis | the production of mature egg cells |
| primary oocyte | diploid cell in prophase 1 of meiosis that can be hormonally triggered to develop into an ovum |
| ovum | the female reproductive cell |
| polar bodies | cells produced in females that do not participate in reproduction |
| germ cells | A special type of diploid cell that will divide by mitosis to produce replacements but also divide by meiosis to produce gametes |
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