population is in genetic equilibrium and cause evolution to occur: (2). If a population is not evolving, allele frequencies in its gene pool do not change, which means that the (1) The Hardy-Weinberg principle predicts that five conditions can disturb (s): (3) (4). ; and (6).
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- The trait that natural selection “selects for” is lifetime Darwinian fitness. If relative matching of the moths to the background is determining fitness differences, is there any difference in other fitness components in the color morphs of Biston betularia that is influencing the direction of evolution in the three populations shown in the graph?Which assumption of Hardy-Weinberg, when not met, effect the most evolutionary change? Why is it appropriate to define evolution as the change in allele frequencies of a population over time? What is the most important mechanism that produces adaptive evolution?The trait that natural selection “selects for” is lifetime Darwinian fitness. If relative matching of the moths to the background is determining fitness differences, is there any difference in other fitness components in the color morphs of Biston betularia that is influencing the direction of evolution in the three populations shown in the graph? Give a reason for your answer.
- you (should have) learned that selection alone cannot purge a population of the very last copy of a deleterious allele. If selection is unable to do so, which of the remaining mechanisms (of the five Hardy-Weinberg) assumptions is MOST LIKELY to do so? Justify your answer. That is, why is the mechanism you picked the most likely to get rid of that last copy of a harmful allele?How Can We Measure Allele Frequencies in Populations? Explain the connection between changes in population allele frequencies and evolution, and relate this to the observations made by Wallace and Darwin concerning natural selection.If you measured the allele frequencies of a gene and found large differences from those predicted by the Hardy–Weinberg principle, would that prove that natural selection is occurring in the population you are studying? Review the conditions that lead to an equilibrium population, and explain your answer.
- What is the Evidence That Populations Evolve by Natural Selection?If allele frequencies do not change from one generation to the next, is the population definitely in Hardy-Weinberg equilibrium? Why or why not?If gene A/a is not in Hardy-Weinberg equilibrium due to natural selection such that individuals with the genotype AA have a fitness value of 1.0, heterozygotes have only slightly reduced fitness at 0.9, and individuals with the genotype aa have a fitness value of 0.6, what kind of change in allele frequency would you expect to see over time assuming you start with equal frequencies of the 2 alleles?
- if a population of jumping spiders consists of 40 females and 40 males, what is the effective population size? Give the appropriate equation and show your work. Will genetic drift be an important evolutionary force in this population? Why or why not? If your answer is "yes", what does genetic drift do to allele frequencies? If your answer is "no", name two forces other than genetic drift that might be important in determining allele frequencies. asapWhich of the following statements most accurately describes the effects of genetic drift on a population? a. Populations of the same size will follow the same evolutionary trajectory when evolving due to drift. b. Genetic drift has the potential to drive evolution in all populations. c. Allele frequencies in a population of infinite size will ultimately drift to fixation or loss. d. The loss of otters in California due to excessive hunting cause a founder effect.What is the intuitive meaning of the mean fitness of a population? How does its value change in response to natural selection?