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15 Cards in this Set
- Front
- Back
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Meiosis |
-a process in cell division during the number of chromosomes decreases to half the original number by two divisions of the nucleus, which results in the production of sex cells |
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Prophase I |
-chromosomes become visible -nuclear envelope breaks down -crossing-over occurs |
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Metaphase I |
-pairs of homologous chromosomes move to the equator of the cell |
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Anaphase I |
-homologous chromosomes move to the opposite poles of the cell |
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Telophase I & Cytokinesis |
-chromosomes gather at the poles of the cell -cytoplasm divides |
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Prophase II |
-a new spindle forms around the chromosomes |
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Metaphase II |
-chromosomes line up at the equator |
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Anaphase II |
-centromeres divide -chromatids move to opposite poles of the cell |
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Telophase II & Cytokinesis |
-a nuclear envelope forms around each set of chromosomes -the cytoplasm divides |
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Cross-over |
-the exchange of genetic material between homologous chromosomes during meiosis; can result in genetic recombination |
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Independent Assortment |
-the random distribution of the pairs of genes on different chromosomes to the gametes |
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Spermatogenesis |
-the process by which male gametes form |
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Sperm |
-the male gamete (sex cell) |
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Oogenesis |
-the production, growth, and maturation of an egg, or ovum |
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Ovum |
-a mature egg cell |
