QUESTION 13 "The ABO blood group in humans is controlled by a single locus with three different alleles. Homozygosity for IA produces type A blood. Homozygosity for IB produces type B blood. Homozygosity for IO produces type O blood. Type AB blood is produced by the genotype IA/IB. IO is recessive to IA and IB, thus IA/IO gives type A blood and IB/IO gives type B blood. In the USA the ALLELE frequencies for the ABO alleles are given below. The Rhesus or Rh factor in blood typing also has multiple alleles, but the alleles can be classified into two types, positive and negative. Rh is dominant over Rh-. The allele frequencies of these alleles are indicated below. The MN blood antigen trait is controlled by two co-dominant alleles at a single locus. Type M individuals are homozygous for the M allele, type MN individuals are heterozygous and type N individuals are homozygous for the N allele, (co-dominant). In the USA, the allele frequencies for this blood group are also indicated below. ABO alleles [IA] 0.35 [IB] 0.15 [IO] 0.5 Rh factor alleles [Rh ] 0.6 [Rh-] 0.4 MN alleles [M] 0.5 [N] 0.5 What is the probability that a random person in the USA has type B blood