A population carries two alleles at locus. One allele has miniscule fitness advantage: What is the long term fate of the locus if natural selection is the only important evolutionary force? Select one: Eventually the beneficial allele will be fixed by natural selection: Both alleles will remain in the population at a ratio proportional to the fitness difference: The population size will increase d. The population size will decrease; The allele at a disadvantage will mutate to improve to the fitness level of the other allele. scenario where population Is evolving only in response to natural selection, allele frequencies will change at rate proportiona t0 the selection coefficient and the Select one: size of the population: population's growth rate: level of genetic variation at the locus: mean fitness of the population: degree of the allele s penetrance
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- The problem involves a population with two alleles at a specific locus. - One allele has a minuscule fitness advantage over the other. - Natural selection is the only evolutionary force considered. Step 2: Identify the key concepts. - Alleles: Different forms Show more…
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Whenever diploid populations are in Hardy-Weinberg equilibrium at a particular locus A) the allele's frequency should not change from one generation to the next, but its representation in homozygous and heterozygous genotypes may change. B) natural selection, gene flow, and genetic drift are acting equally to change an allele's frequency. C) this means that, at this locus, two alleles are present in equal proportions. D) the population itself is not evolving, but individuals within the population may be evolving.
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POPULATION GENETICS 10. If p is the frequency of B allele and q is the frequency of the b allele, which of the following indicates the frequency of individuals who are heterozygous in a population at Hardy-Weinberg equilibrium? A. p² B. q² C. p² + 2pq + q² D. 2pq E. p² + 2pq 11. Earwax type is determined by two alleles of the ABCC11 gene: the ABCC11ᴬ allele is recessive and results in dry earwax while the ABCC11ᴳ allele is dominant and produces wet earwax. In a population that is at Hardy-Weinberg equilibrium for this gene, 91% of people have wet earwax. What is the frequency of the ABCC11ᴳ allele in the population? A. 0.30 B. 0.09 C. 0.49 D. 0.91 E. 0.70 12. A dominant and a recessive allele of a single locus are at equal frequencies in a large population, initially at Hardy-Weinberg equilibrium. The population is reduced in a single generation to less than 50 individuals and remains at this size for many more generations. What is the MOST LIKELY consequence of the smaller population size? A. The recessive allele will be lost from the population. B. One of the two alleles will be lost from the population—it could be either the dominant or the recessive allele. C. Both alleles will remain at the same frequencies as before. D. The dominant allele will be lost from the population. 13. Which of the following will NOT, by itself, affect the frequency of an allele in a population over time? A. Whether the size of the population is small. B. Whether the allele is dominant or recessive. C. Whether the allele is subject to selection. D. Whether the allele is subject to mutation at a high rate. E. Whether there is migration from another population lacking the allele.
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Population geneticists use the Hardy-Weinberg equilibrium equation to determine: Group of answer choices if human populations are operating on evolutionary forces. whether evolution is occurring at all loci throughout the genome simultaneously. whether a particular trait is polygenic. whether allele frequencies in a population are changing. the mode of inheritance of Mendelian traits.
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