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Quiz 11 1. Which is NOT a requirement for a population to satisfy the conditions of the HardyWeinberg Principal? a. there must be no genetic change in the population b. there must be no differences in survival ability among individuals c. the population size must be large d. the two alleles must occur in equal frequency 2. Sunflowers can have a single large flower or many smaller flowers. The large flower phenotype is the product of a dominant allele. If the frequency of the large flower allele is 0.6 what proportion of the population will have many small flowers if they mate randomly? a. 40% b. 36% c. 64% d. 16% 3. Which is NOT a requirement for evolution by natural selection? a. phenotypic differences among individuals b. genetic differences among individuals c. the population size must be large d. heritability of differences in survival or reproductive ability 4. Which statement about the sickle cell allele and its effects is NOT true? a. carriers of the allele are resistant to the parasite that causes malaria b. in areas where malaria is common the allele is common because of heterozygote advantage c. the red blood cells of homozygotes lose their ability to carry oxygen when oxygen levels are low d. in areas where few people have malaria the allele is increasing in frequency 5. The formation of new species is thought to occur most commonly when a. a species undergoes rapid mutational change b. natural selection is very strong c. two populations of a species that have been separated come into contact again d. two populations of a species evolve in different geographic areas