Unformatted text preview: of chromatids, so that the nonsister chromatids carry new combinations of genes. During Metaphase I the synapsed pairs of chromosomes are arranged on an equatorial plane, during Anaphase I, the centromeres are pulled to opposite poles, but the centromeres DO NOT divide, so both chromatids are carried together. Therefore each pole receives one two-stranded chromosome from each homologous pair. Meiosis I is therefore a reductional division, in which each daughter cell ends up with half the number of chromosomes it had at the start of meiosis. Meiosis II During metaphase II the chromosomes in each daughter cell are arranged on the equatorial plane; the centromeres then divide and the two chromatids of which each chromosome is composed are pulled to opposite poles. Cell division occurs, and nuclear membranes re-form. Thus the ultimate result of the two stages of meiosis is four cells derived from each germ cell....
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This note was uploaded on 01/18/2011 for the course ANTHROBIO 161 taught by Professor Frisancho during the Spring '10 term at University of Michigan.
- Spring '10