BIOL 1201 : BIO 11 12 13 Study Guide

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15 Mar 2019
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Multicellular organisms depend on cell division for: development from a zygote, growth, and repair. Cell division is an integral part of the cell cycle, the life of a cell from formation to its own division. Most cell division, or mitosis, results in daughter cells with identical dna (identical to each other, and identical to the parent cell) Meiosis produces non-identical daughter cells (gametes = sperm and egg cell) All dna in a cell constitutes the cell"s genome. Dna molecules in a cell are packaged into chromosomes. Every eukaryotic species has a characteristic number of chromosomes in each cell nucleus. Somatic cells have two sets of chromosomes (1 from each parent) Gametes have half as many chromosomes as somatic cells. Eukaryotic chromosomes consist of chromatin, a complex of dna and protein that condenses during cell division. In preparation for cell division, dna is replicated and copied and the chromosomes condense.

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