BIOL10005 Chapter Notes - Chapter Week 2: Reassortment, Meiosis, Metaphase
23 Aug 2018
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Interphase - individual chromosomes cant be identified because they are decondensed - granular appearance. During prophase, chromosome condense to produce characteristics structures. Eukaryotic chromosomes are linear structures containing a centromere - responsible for attaching chromosomes to the mitotic spindle + moving them to poles during mitosis. Centromere can be in middle of chromosome, at the end, or off-centre. Meiosis and the formation of haploid cells chapter 9: pg. Meiosis occurs during the formation of sperm and mature oocytes. 2 copies of a chromosome are homologous - similar not identical. Eukaryotic cells are primarily diploid - 2n (number of homologous pairs of chromosomes) chromosomes) During s phase, dna content doubles as dna in each chromosome is replicated to produce 2 identical sister chromatids. Meiosis reduces the chromosome number in the reproductive cells to half that of the parent cell - haploid. In animals, meiosis immediately precedes formation of male/female gametes.
