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Exam4_A_Key - True/False 2 points each 1 The mismatch...

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True/False, 2 points each 1. The mismatch repair mechanism of mispaired nucleotides is the rarest type of repair system. False 2. Transposable elements are RNA sequences that are able to move their location from the nucleus to the cytoplasm of cells. False 3. Mutations outside of the coding region can have no detectable phenotypic effect True 4. Favorable mutations arise because the organism has a need for it. False 5. CG sites in mammals are known to be hot spots of DNA mutation True 6. Mutational hot spots occur because methylated cytosines are not highly mutable False 7. The volume of the egg cell is about 5000 times the volume of the sperm head and contributes virtually all of the cytoplasm to the zygote, including the mitochondria. True 8. Conjugation in cilliates involves the exchange of micronuclei. True 9. Cytoplasmic male sterility is named as such because it is a trait that is genetically transmitted through the male parent. False 10. If a population is in Hardy-Weinberg equilibrium, allele frequencies will change through transmission under random mating.
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False 11. One implication of the Hardy-Weinberg principle is that the great majority of rare, harmful recessive alleles are present in heterozygous carriers. True 12. Mutation and migration both introduce new alleles into populations. True 13. Natural selection can change allele frequency in a systematic direction because of the differential reproductive success of certain genotypes. True 14. Random genetic drift consists of random changes in allele frequency that occur in finite populations as a result of chance excess reproduction among certain genotypes. True 15. In a finite population, an allele is less likely to be lost than it is to go to fixation.
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