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15 Cards in this Set
- Front
- Back
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gametogenesis
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production of gametes from germ (primordial) cells
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zygote
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combination of male and female gametes, diploid
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gamete production characteristics
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chromosome # reduced from diploid to haploid
maternal and paternal genetic info mixed cell shape/structure altered to specialized functions |
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Meiosis I daughter cells
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primary gametes
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Meiosis II daughter cells
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secondary gametes
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Meiosis II daughter cell
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secondary gamete
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chromosomal p arm
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shorter, petite
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chromosomal q arm
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longer
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Mitosis - late metaphase
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chromosomes duplicate, making cell tetraploid (4c)
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Meiosis - Prophase I - Zygotene
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synapsis of homologues
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Meiosis - Prophase I - Pachytene
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Crossing over between homologous chromosomes increases genetic variability
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Meiosis - Prophase II - Diplotene
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Chiasmata, regions where chromatids cling together, become apparent as homologous pairs begin to separate
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Diplotene stage in oogenesis
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Dictytene
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Meiosis I - Metaphase I
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No centromere duplication
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Meiosis II - Metaphase
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23 partially duplicated chromosomes line up at metaphase plate, centromeres duplicate -> gamete production
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