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2014-07-17T18:50:06+08:00

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Diploid cells have 2 sets of chromosomes, or 46 chromosomes. 
haploid cells (such as sex cells) have only 1 set of chromosomes, or 23 chromosomes.
Chiasma-  the point where two homologous non-sister chromatids exchange genetic material during chromosomal crossover during meiosis.
Tetrad- A group of four cells, as of spores or pollen grains, formed from a parent cell by meiosis.
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