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Unformatted text preview: This type of cell division allows multicellular organisms to grow and repair damaged tissue. Meiosis Meiosis produces daughter cells that have one half the number of chromosomes as the parent cell. 2N → N Meiosis enables organisms to reproduce sexually . Gametes (sperm and eggs) are haploid. Meiosis is necessary in sexually-reproducing organisms because the fusion of two gametes (fertilization) doubles the number of chromosomes. Meiosis involves two divisions producing a total of four daughter cells. Click here to go to the chapter on meiosis. Chromosome Structure and Replication A chromatid is a single DNA molecule. Double-stranded chromosomes have two chromatids; normally, each one is identical to the other. The point where the two chromatids are attached is called the centromere ....
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This note was uploaded on 12/15/2011 for the course BIO BSC1010 taught by Professor Gwenhauner during the Fall '10 term at Broward College.
- Fall '10