Which of the following microevolutionary forces act upon existing variation within a breeding population?   gene flow and natural selection   natural selection and genetic drift   gene flow and mutation   genetic drift , gene flow, and mutation   natural selection, mutation, genetic drift, and gene flow

5) A mutant red coat color allele (Yr) arises in island B and is present in the adult population in a heterozygous individual in the population of 117 adults of year 2000. Yr is recessive to the other alleles at the Y locus. What is the probability (p) that, purely by the action of genetic drift, the allele will rise to fixation (reaching a frequency of 1.0) at some time in the future? (A)  0.0 < p  < 0.2                   (B)  0.2 < p  < 0.4                   (C)  0.4 < p  < 0.6       (D)  0.6 < p  < 0.8                   (E)  0.8 < p  < 1.05 6) For the same genetic scenario, what if the single red allele arose in the island A and was present by 1990 in a heterozygous individual, one of a population 12 individuals. Would this red mutant allele have a better or worse chance of rising to fixation relative to the island B population of problem 5? (A) red allele more likely to reach fixation in A island beginning in 1990 compared to B island beginning in…

Below is a histogram showing the results from a previous class’s dataset. Some trials resulted (ended) with the white allele fixing (reaching 100%), some resulted with the white allele going extinct (0%), and some fell somewhere in between. What phenomenon most likely drove this pattern? Answer choices are : random mating, genetic drift, mutation, natural selection, or gener flow

Select all that are TRUE regarding the Hardy Weinberg Law. 1.It predicts the allele frequencies in the next generation 2.The dominant allele frequency is denoted as p 3.The genotype frequencies must add to 1 4.It assumes that natural selection is not influencing the population 5.The assumptions of the law are rarely met in natural populations

59)The figure below shows the shell length in two random, and representative samples of mussels from the same species. The samples were obtained from the same population but two years apart. Knowing that this species of mussel can live for over a decade, which statement is consistent with the data? The population experiences random genetic drift   The population experienced purifying selection   The population evolved to be shorter   The population is undergoing inbreeding depression   The population experienced directional selection

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24. In a toad population, green toads produce 4 offspring over their lifetime, brown toads produce 2.5 offspring, and gray toads produce 6 offspring. What are the relative fitnesses of these phenotypes (in the order green, brown, gray)? Group of answer choices 1, 0.42, 0.67 0.33, 1, 0.67 0.67, 0.42, 1 0.67, 0.33, 1 1, 0.33, 0.67