8 - Mitosis: cell division that results in 2 cells with the...

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Mitosis: cell division that results in 2 cells with the same genetic makeup as the original cell Karyotype: looking at chromosome for size and shape o Chromosomes aren’t identical but similar in shape and size o Very little tolerance for difference in chromosome number Chromosome disorders you can survive from Down syndrome: extra chromosome Sex chromosomes o Piece of one chromosome may attach to another chromosome Common situation in cancer cells ?? How can that lead to cancer? o 23 pairs of chromosomes and each are replicated o Chromosome #9: ABO group Only two slots o Chromosome #12 PKU Enzyme that break down amino acids; don’t work Meiosis Haploid Gametes (sperm or egg) o Takes a diploid cell and makes a haploid cell o Halves the number of diploid Mitosis Somatic cells, generally (but not always) (Diploid zygote = fusion of haploid sperm and egg) o Diploid:2 from each chromosome cell Mitotic cell cycle o Nerve cells don’t divide
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8 - Mitosis: cell division that results in 2 cells with the...

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