BIOA01H3 Chapter Notes - Chapter 21.1: Allele Frequency, Human Height, Molecular Evolution
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BIOA01H3 Full Course Notes
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21. 1 genetic variation is the differences in dna sequences. 21. 2 patterns of genetic variation can be described by allele frequencies. 21. 3 evolution is a change in the frequency of alleles/genotypes over time. 21. 4 natural selection leads to adaptations, which enhances how an organism fits in. 21. 5 migration, mutation, genetic drift, and non-random mating are non-adaptive. 21. 6 molecular evolution is a change in dna/amino acid sequences over time mechanisms of evolution w/ its environment. Until charles darwin"s book: on the origin of species , scientists looked at variations in humans as unimportant. Originally it was said that species were created in their modern forms by a divine. Creator and since the creator chose what a species were to be like, they were fixed and unchanging variations thus were ignored. But since the time of darwin, we have learned that species don"t conform to their original way, rather they contain of many variants.
