bio unit 3
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Created by:
pinkstuff969 on January 27, 2012
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12 terms
Terms | Definitions |
|---|---|
 Meiosis | (genetics) cell division that produces reproductive cells in sexually reproducing organisms |
| Gametes | reproductive cells, have only half the number of chromosomes as body cells |
| genetic recombination | the regrouping of genes in an offspring that results in a genetic makeup that is different from that of the parents |
| Independent assortment | the random distribution of the pairs of genes on different chromosomes to the gametes |
| Sprematogenesis | the process by which sperm develop |
| Oogensis | egg production |
| Asexual reproduction | a reproductive process that involves only one parent and produces offspring that are identical to the parent |
| Sexual reproduction | process by which cells from two different parents unite to produce the first cell of a new organism |
| synapsis | the side by side pairing of homologous maternal and paternal chromosomes at the start of meiosis |
| Tetrad | the four chromatids in a pair of homologous chromosomes that come together as a result of synapsis during meiosis |
| Crossing-over | process in which homologous chromosomes exchange portions of their chromatids during meiosis |
| Karyotype | A picture of all the chromosomes in a cell arranged in pairs |
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