Unit 3 - Natural Selection and Population Genetics KEY

Unit 3 - Natural Selection and Population Genetics KEY -...

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BIOL 11 SI UNIT 3 Natural Selection and Population Genetics Fill in the Blanks All of the genes in a population make up the (1) gene pool – a collection of genetic resources that the individuals of the population, and their offspring, share. Often, each kind of gene in the pool is present in two or more slightly different molecular forms, or (2) alleles . Only (3) mutation creates new alleles. Other events shuffle existing alleles into different combination. Researchers typically track (4) allele frequencies , or the abundance of certain alleles in a population. They start at (5) genetic equilibrium , a theoretical reference point. At this point, a population is (6) not evolving with respect to the allele frequencies being studied. The term (7) microevolution refers to small-scale changes in population allele frequencies that arise from mutation, natural selection, gene flow, and (8) genetic drift . Use the Hardy-Weinberg rule to determine the values requested. 9. In a population of 200 individuals, determine the following if p = 0.8. a. the number of homozygous dominant individuals = p² x 200 =128 b. the number of homozygous recessive individuals q = 1- p =0.2; q² x 200 = 8 c. the number of heterozygous individuals
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Unit 3 - Natural Selection and Population Genetics KEY -...

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