ANTHR219 Lecture Notes - Lecture 6: Nuclear Dna, Indel, Hominini
1 Oct 2016
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Document Summary
There are two places to look for genetic information, (1) in the cell nucleus, where you get half from the mother and half from the father, or (2) in the mitochondria. G and c always match up, and a and t always match up. Dna has a double helix, two coils that match up across, held together by these chemical bases. There are approximately 3 million base pairs in the nuclear dna and 16 to 17 000 in the mitochondrial dna. The order of the bases tells you what kind of organism you have. ) Mitochondria dna comes from the mother only. (its inside the nucleus, has dna, identical to mothers, who passes it down to sons and daughters, but only the females continue to pass it on. ) Mutation (only way to get new dna, its a copy mistake, a substitution, change in the dna. ) There"s a chemical change in a base (called snp"s).
