Which of the following statements correctly describes inbreeding? A. Inbreeding increases the frequency of genotypes with homozygous alleles in a population. B. Inbreeding results from dissassortative mating. C. Inbreeding changes the allele frequencies in a population. D. Inbreeding increases the frequency of harmful phenotypes caused by dominant alleles in the population.
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Which of the following statements correctly describes inbreeding?
- A. Inbreeding increases the frequency of genotypes with homozygous alleles in a population.
- B. Inbreeding results from dissassortative mating.
- C. Inbreeding changes the allele frequencies in a population.
- D. Inbreeding increases the frequency of harmful
phenotypes caused by dominant alleles in the population.
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- Which statement about Inbreeding (=consanguinity) is correct? a. Inbreeding has no influence on the degree of homozygosity. b. Inbreeding increases the frequency of homozygotes in a population. c. Inbreeding improves the overall biological fitness of progeny. d. Inbreeding increases the frequency of heterozygotes in a population.What affect will inbreeding tend to have on genotypic frequencies in a population? a) It will increase the frequency of genotypes that produce a dominant phenotype. b) It will decrease the frequency of genotypes that produce a dominant phenotype. c) It will increase the frequency of homozygous genotypes. d) It will increase the frequency of heterozygous genotypes.The continued presence of the allele that causes sickle cell anemia in areas where falciparum malaria is prevalent demonstrates which of the following phenomena? (a) inbreeding depression (b) frequency-dependent selection (c) heterozygote advantage (d) genetic drift (e) a genetic bottleneck
- What are the advantage and disadvantages of inbreeding in the economy? Give a solid example.A farmer performs truncation selection to try to increase the weight of peaches in his orchard. Which statement correctly describes a possible outcome of this selection? a) If peach weight is not heritable, the average weight in the next generation will increase. b) If peach weight is heritable, the average weight in the next generation will increase. c) The average peach weight will decrease due to this inbreeding. If peach weight is heritable, the average weight in the next generation will decrease.Which statement best summarizes why genetic drift tends to impact small populations more than large populations? A. Small populations have a heterozygote advantage because heterozygotes are more common than homozygotes. B. Small populations have a smaller gene pool, so random changes influence them more. C. Small populations have a relatively large gene pool, so the founder effect stabilizes their alleles.D. Small populations tend to experience directional selection, making one phenotype more common.
- what is the effects of inbreeding on a population?Change in allele frequency of a population is called_____ . a. macroevolution c. inbreeding b. adaptive radiation d. microevolutionPopulation genetics is the study of: a. how selective forces change the allele frequencies in a population over time b. the genetic basis of population-wide traits c. whether traits have a genetic basis d. the degree of inbreeding in a population
- What is inbreeding depression and why is it particularly a concern for conservation biology? A) It is a chemical imbalance in the brain of animals forced into close quarters, such as those rescued from the wild and placed in zoos. B) It is a situation where the frequency of an allele over time depends greatly upon its initial frequency, as such if populations are too small, the present alleles are at risk of being lost. C) It is a situation where offspring of genetic relatives have increased fitness, this occurs when populations of animals are large and they mate freely. D) It is a situation where offspring of genetic relatives have reduced fitness, this occurs when populations of animals become too small and they are thus likely to mate with closely related individuals.In a population, the frequencies of two alleles are B = 0.67 and b = 0.33. The genotype frequencies are BB = 0.50, Bb = 0.37, and bb = 0.13. Do these numbers suggest inbreeding? Explain why or why not.Issues with inbreeding often occurs with dog breeds, such as German shepherds. How can we the best describe inbreeding? a. successive breeding with individuals from a variety of populations b. successive breeding within individuals from within one population c. breeding between different breeds to produce new breeds d. breeding the same set parents more than once