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W10OutlineLec26 - *Diplotene— synaptonemal complex...

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Luis David Gomez Week 10 Lecture 26 Outline 59866865 Bio 192 D103 Cell Biology 3/10/08 Meiosis--What is it? Production of gamates Function Genetic Diversity Survival Error Prone Trisomies Monosomies Non-disjuctions at Maternal M1—as eggs sit in ovary, COHESINS degrade over time and separation of chromosomes occurs Stage of Meiosis *Leptitine-- chromosomes are really thin Bouquet- - sister chromatids bunch up *Zygotene- - homologs come together and pair up *Pachytene— thick chromosomes (undergo homlog pairing and make synaptonemal complex) between the two bivalves forms a complex a protein that allows recombination
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Unformatted text preview: *Diplotene— synaptonemal complex removes, formation of chisma (sites or recombination--Leads to meiosis I Prior to Anaphase I Monopolin is a protein that binds MT to inside of kinetechores to stop MAD protein from halting anaphase Comparison between Meiosis and Mitosis (2 Key differences) Meiosis-Chromosomes line up NEXT to each other so that they can undergo recombination 2 cell divisions—only undergoes S phase one time Mitosis-Chromosomes line up vertically \ \ \ How Chromosomes line up on metaphase spindle?...
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W10OutlineLec26 - *Diplotene— synaptonemal complex...

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