11. A lecture hall of 1000 students conducts the same allele frequency simulation that we conducted in class with the A and a cards. In the beginning, everyone starts as Aa. The following data was collected; what is the most likely explanation for the results? a. natural selection against AA b. genetic drift c. mutation Generation %A % .5 .9

11. A lecture hall of 1000 students conducts the same allele frequency simulation that we conducted in class with the A and a cards. In the beginning, everyone starts as Aa. The following data was collected; what is the most likely explanation for the results? a. natural selection against AA b. genetic drift c. mutation Generation %A % .5 .9

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter19: The Evolution Of Populations

Section: Chapter Questions

Problem 7RQ: One of the original Amish colonies rose from a ship of colonists that came from Europe. The ship s...

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One of the original Amish colonies rose from a ship of colonists that came from Europe. The ship s captain, who had polydactyly, a rare dominant trait, was one of the original colonists. Today, we see a much higher frequency of polydactyly in the Amish population. This is an example of: natural selection genetic drift founder effect b and c
An Eastern European immigrant carrying the allele for Tay-Sachs disease settled in a small village on the St. Lawrence River. Many generations later, the frequency of the allele in that village is statistically higher than it is in the immigrants homeland. The high frequency of the allele in the village probably provides an example of: a. natural selection. b. the concept of relative fitness. c. the HardyWeinberg genetic equilibrium. d. phenotypic variation. e. the founder effect.
Which of the following is not a component of Darwins theory as he understood it? a. Some individuals in a population survive longer than others. b. Some individuals in a population reproduce more thanothers. c. Heritable variations allow some individuals to compete moresuccessfully for resources. d. Mutations in genes produce new variations in a population. e. Some new variations are passed to the next generation.
Which of the following ideas is not included in Darwins theory? a. All organisms that have ever existed arose through evolutionary modifications of ancestral species. b. The great variety of species alive today resulted from the diversification of ancestral species. c. Natural selection drives some evolutionary change. d. Natural selection preserves advantageous traits. e. Natural selection eliminates adaptive traits.
Population genetics is the study of: how selective forces change the allele frequencies in a population over time the genetic basis of population-wide traits whether traits have a genetic basis the degree of inbreeding in a population
1) Genetic drift is the result of ______. A) differential reproductive success B) chanceC) a large gene pool D) natural selectionE) environmental variation Then explain why every incorrect answer is wrong and why.
1) What does the term Natural Selection mean? Select one: a.The number and relative frequency of alleles present in a particular population. b.The process through which individuals with certain traits tend to produce more surviving offspring that individuals without those traits. c. Any change in the hereditary material of an organism.
4) Which of the following does not alter allele frequencies? a.Inbreeding b.Gene flow c.Genetic drift d.The bottleneck effect e.Natural selection
6. Which of the following statements does NOT describe Darwin's theory of natural selection A. Members of a population will complete B. Members of population have heritable variations. C. Populations tend to reproduce in small numbers. D. Sa members of a population have adaptive traits.
1.A) Adaptations to a Changing Environment• Explain why it is necessary for organisms to have the ability to adapt.• Why is the current environment making it difficult for organisms to adapt?• Explain how organisms develop adaptations.2. B) Artificial Selection• Explain how artificial selection is like natural selection.• Why are quail useful subjects for an experiment on selection? What other organisms share similar characteristics?
1. Which among the following is NOT a principle of natural selection? a. The DNA sequence of the organism will change. b. The characteristics of organisms are inherited or passed from parent to offspring. c. Offspring vary among each other about their characteristics, and those variations are inherited. d. More offspring are produced than can survive. 2. Tawilis is a freshwater sardine endemic only in the Taal Lake in Batangas province. After several eruptions of the Taal volcano in the 21st century, the sardine population mentioned above rapidly dropped up to 82%. What best describe this scenario? a. mutation b. migration c. natural selection d. genetic drift
2. You have sampled a population in which you know that the percentage of the homozygous recessive genotype (a) is 26%. Using that 26%, calculate the following: A. The frequency of the "aa" genotype. B. The frequency of the "a" allele. C. The frequency of the "A" allele. D. The frequencies of the genotypes "AA" and "Aa." E. The frequencies of the two possible phenotypes if "A" is completely dominant over "a