e Galapagos islands over four generations. How can you explain this ta using your knowledge of natural selection? Generation 1 Generation 2 Generation 3 Generation 4 3.5 сm 3.5 cm 5.5 cm 7.5 сm
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- 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. asapIn a population of 2000 ladybugs at equilibrium, there are 1120 ladybugs with eight spots (SS), 30 with six spots (Ss), and 850 with four spots (ss). If random mating were to occur within the ladybug population, with no mutations, gene flow, or natural selection taking place, what would you expect the frequency of q to be in the next generation?A group of 50 men and 50 women establish a colony ona remote island. After 50 generations of random mating,how frequent would a recessive trait be if it were at afrequency of 1/500 back on the mainland? The population remains the same size over the 50 generations, andthe trait has no effect on fitness.
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- You are asked to assess whether a population of endangered salamanders can adapt to warming climate in their preferred habitat. The salamanders vary at a locus that determines adaptation to temperature, and the warming climate creates selection favoring one of two alleles at that locus. Drawing on what you know about natural selection and genetic drift, what information would you need to know about the salamanders to determine whether the allele that improves their adaptation to warmer climates will become fixed in the population? Strictly no plagiarism.In the Grants’ study of the medium ground finch, do you think the pattern of natural selection was directional, stabilizing, disruptive, or balancing? Explain your answer. If the environment remained dry indefinitely (for many years), what do you think would be the long-term outcome?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.