Meiosis Chart
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10 terms
Terms | Definitions |
|---|---|
 Prophase 1 | (DNA replication has already occurred) Chromosomes shorten and thicken, nuclear envelope begins to disappear, centrosomes duplicate; diploid |
| Prometaphase 1 | Chromosomes continue to shorten and thicken, nuclear envelope disappears, centrosomes to opposite poles, spindle fibers form and attach to chromosomes, HOMOLOGUES SYNAPSE, CROSSING OVER OCCURS; diploid |
| Metaphase 1 | Homologues line up at the equator in random order, CROSSING OVER STILL OCCURRING; diploid |
| Anaphase 1 | Homologues begin to move to opposite poles, sister chromatids stay intact; diploid |
| Telophase 1 | Nuclear envepoles begin to appear, cleavage furrow begins to form, Cytokinesis will follow; haploid |
| Prophase 2 | (No DNA replication) Nuclear envelope begins to disappear, centrosomes duplicate, spindle fibers form, chromosomes attach; haploid |
| Metaphase 2 | sister chromatids line up at the equator; haploid |
| Anaphase 2 | Centromeres split and sister chromatids move to opposite poles; haploid |
| Telophase 2 | Nuclear envelopes begin to reappear, cleavage furrows begin to form; haploid |
| Cytokinesis 2 | These are GAMETES. Spermatogenesis produces 4 sperm cells; Oogenesis produces 1 egg and 3 polar bodies |
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