BIOA01H3 Lecture Notes - Lecture 14: Parthenogenesis, Heterogametic Sex, Gamete
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BIOA01H3 Full Course Notes
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The process by which cells make more cells. Dna synthesis, duplicate genome: g2 phase. Accumulation of proteins (i. e. proteins that will coordinate spindle apparatus) to allow cytoplasmic division to occur: g0 phase. Majority of cells who exited the cell cycle will remain here. Resti(cid:374)g phase for (cid:272)ells (cid:449)ho do(cid:374)"t go through a(cid:272)ti(cid:448)e (cid:373)itosis i. e. (cid:374)er(cid:448)e (cid:272)ells, eye le(cid:374)se (cid:272)ells. During s phase, each chromosome makes 2 copies of them through replication. Mitosis stages: prophase, prometaphase, metaphase, anaphase, telophase + cytokinesis. In prometaphase, the chromosomes attach to the spindle. Attached to the spindle through a centromere and on each side, are protein complexes called kinetochores which is the binding site of the spindle. Each daughter cell is diploid and same # of chromosomes. Each daughter cell contains half the number of chromosomes as the parent. Each daughter cell is haploid and has half the # of chromosomes. Prophase i (meiosis i: condensation of dna, hromosomes first become visible as thin threads.
