You find a population of wild horses (Equus ferus) with three distinct coat colors ranging from pure white to reddish brown. As an expert equine geneticist, you know that horse color shows incomplete dominance (a heterozygous will express an intermediate phenotype between the phenotypes of the two homozygous genotypes). The chestnut (brown) allele is dominant over the cremello (white) allele, and a palomino (golden) color is intermediate between brown and white. In this population, 49 horses have chestnut (brown) coats, 8 have palomino (golden) coats, and 43 horses have cremello (white) coats. (24 points) a) List the observed phenotypes with their corresponding genotypes, using the symbols B and b to represent alleles. b) What are the observed genotype frequencies? c) What are the observed allele frequencies? d) What are the expected genotype frequencies if this population is at Hardy-Weinberg equiLiBrium for coat color? e) You calculate a Chi-square test using observed and expected count data for each horse color using the data above, and you find a Chi-square statistic of 71.08. Recall that the critical Chi-square value for 2 degrees of freedom is 5.99. Given your statistical result, make a biological conclusion for this study in terms of evolution. f) Using the axes provided on the .pptx file provided, sketch the frequencies of observed phenotypes in this population (from the problem description). Label both axes. Horse Question Part f Frequency Trait g) Based on your answers to parts e and f, What evolutionary force might be at work here? Be specific! What impact would you expect on genetic variance?