Populations 0.0 / 5 ? BiologyDNA, genetics and evolutionA2/A-levelAQA Created by: RachelezyCreated on: 21-02-20 09:15 Define species A group of organisms that can interbreed to produce fertile offspring 1 of 8 Define population All of the organisms of a particular species that live in the same place 2 of 8 Define gene pool Range of different alleles existing for a particular locus within a population 3 of 8 Define allele frequency Proportion of a certain allele within a gene pool, expressed as a decimal or as a percentage 4 of 8 What is the Hardy-Weinberg Principle? Allows us to estimate frequency of alleles in a population, as well as if allele frequency changes overtime 5 of 8 Give the assumptions made by this principle - No mutations occur - No migration in or out of population - alleles all equally passed onto next generation - Random mating - large population 6 of 8 Explain the Hardy-Weinberg equation for calculating allele frequency frequencies of each allele for a characteristic must add up to 1.0 so p+q=1. p=frequency of dominant allele q-frequency of recessive allele 7 of 8 Explain the Hardy-Weinberg equation for calculating genotype frequency p2 + 2pq + q2 = 1 p2 = homozygous dominant 2pq = heterozygous q2 = homozygous recessive 8 of 8
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