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4 Cards in this Set
- Front
- Back
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Meiosis- prophase 1 |
Paternal and maternal chromosomes form homologous pairs Chromosomes coil up, become thicker Chromatids wrap around each other, partially repel, joined at chiasmata Chiasmata- segment of DNA from one chromosome exchanges with same of other chromosome Nuclear envelope disintegrates, nucleolus disappears
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Meiosis- metaphase 1 |
Homologous pairs arrange themselves at equator of spindle Combination of paternal and maternal chromosomes facing each pole |
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Meiosis- anaphase 1 |
Spindle fibres shorten One of each pair pulled to each pole Random mixture of paternal and maternal chromosomes - independent assortment |
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Meiosis-telophase 1 |
Nuclear envelope forms around haploid chromosomes Chromosomes stay in condensed form |
