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Meiosis Vocab Words
| Term | Definition |
|---|---|
| gamete | reproductive cells. ex: sperm&egg |
| haploid | a cell that contain a single set of chromosomes. the haploid cell contains 23 chromosomes. |
| oogenesis | the production of egg cells |
| ovum/ova | an egg cell, female reproductive cell |
| sperm | male reproductive cell |
| zygote | a fertilized egg |
| tetrad | a four-part structure that forms during the prophase of meiosis and consists of two homologous chromosomes, each composed of two sister chromatids. |
| synapsis | the pairing of two homologous chromosomes that occurs during meiosis. |
| fertilization | a process in sexual reproduction that involves the union of the sperm and egg cells. this process restores the diploid number |
| disjunction | when homologous chromosomes move apart toward the opposite poles of the cell in anaphase I. |
| gametogenesis | the production of reproductive cells |
| homologous chromosome | The chromosomes of may be divided into two sets: one that is derived from the mother and the other from the father. |
| crossing over | the exchange of genetic material between non-sister chromatids of homologous chromosomes |
| gonads | the reproductive organs. ex: ovaries and testes |
| spermatogenesis | the production of sperm cells |
| polar bodies | each of the small cells which bud off from an oocyte at the two meiotic divisions and do not develop into ova. |
| meiosis | cell division that produces reproductive cells in sexually reproducing organisms |
| variation | any difference between cells, individual organisms, or groups of organisms of any species caused either by genetic differences |
| nondisjunction | failure of a pair of homologous chromosomes to separate |