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In: Biology

In shorthorn cattle there is a gene that codes for color. The genotype RR results in...

In shorthorn cattle there is a gene that codes for color. The genotype RR results in red coat color, Rr is roan and rr is white.

a) Given that 127 red, 106 roan and 67 white animals were found in the Central Valley of California, calculate the frequencies of the R allele and the r allele in the gene pool of the population

b) If we assume that the cattle are mating randomly, what is the expected frequency of each genotype in the next generation?

c) The rancher has observed that white shorthorn cattle are sterile (unable to reproduce). What are the frequencies of the R and r alleles in the part of the population that is capable of reproducing?

d) If none of the white cattle are mating, what are the expected frequencies of genotypes for the offspring in the next generation?

e) Is the breeding population of cattle –ie that does not include the white individuals- in Hardy Weinberg Equilibrium? Why or why not?

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