Evolution 0.0 / 5 ? BiologyEvolutionUniversityNone Created by: alishaknapmanCreated on: 26-04-19 18:20 Population evolves when.... Individuals with different genotypes survive and reproduce at different rates 1 of 13 Factors other than natural selection which influence evolution? Mutation, Gene flow, Bottleneck, Genetic drift, non random mating. 2 of 13 What is a mutation? Change in nucleotide sequence in DNA (random) 3 of 13 Define adaptation? Favoured trait that evolves through natural selection 4 of 13 What is genetic drift? Random changes of allele frequency from one generation to the next which may cause large changes over time 5 of 13 What is the bottleneck effect? Due to environmental event population size is reduced. Reducing allele frequency 6 of 13 What is non random mating/ sexual selection ? Individuals choose specific member of the opposite sec to mate with 7 of 13 What is intrasexual selection? Improves the ability of individuals to compete for mates 8 of 13 What is intersexual selection? Makes individuals more attractive to opposite sex. 9 of 13 What are the hard weinburg equilibrium factors? Random mating, infinite population, no selection, no mutation and no gene flow 10 of 13 What is sexual recombination? Amplifies number of possible genotypes 11 of 13 What are the advantages? Repairs damages DNA, Eliminates mutation, creates variety of genetic combinations 12 of 13 What are the disadvantages? May break up adaptive gene combination. Reduces rate for female to pass on their genes. 13 of 13
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