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10 terms

Meiosis Chart

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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