Imagine a pair of brothers. Assume that the alleles in their parents are not IBD with each other.
a) Calculate the probability that the brothers will share 2 alleles Identical by Descent (IBD)
b) Calculate the probability that the brothers will share 1 allele IBD.
c) Calculate the probability that the brother share 0 alleles IBD.
d) One of the brothers has the 14,14 genotype at the D3S1358 locus. Calculate the probability that the other brother has that same genotype. Note, the frequency of the 14 allele in the population is 0.1404.
