LIFESCI 7B Chapter Notes - Chapter 4: Allele Frequency, Neutral Mutation, Gene Pool
4 Sep 2018
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Population genetics makes inferences about evolution from patterns of genetic variation. There would be 2*50 + 25 = 125 a alleles. 125/200 = 0. 625 allele frequency of 62. 5: frequency(a) = frequency(aa) + 1/2 frequency(aa) (result is in %, frequency(a) = frequency(aa) + frequency(aa) They could only detect mutations that resulted in amino acid substitutions that changed how the protein moved in the gel: dna sequencing allows us to detect all genetic variation in a. More likely to survive and leave more offspring: an organism that is better adapted to its environment is more t. Fitness: measure of the extent to which the individual"s genotype is represented in the next generation: changes in populations take time. Ex: human birth weight: directional selection selects against one of two extremes and leads to a change in a trait over time. Got bigger bc the seeds that survived were bigger.
