Question

human blood types result from multiple alleles. The alleles for human blood type are written as IA, IB, and i. How many different heterozygous genotypes are possible for blood types? *
a)3
b)2
c)4
d)6​

Answer 1

a there would be IA IA. IB IB. IA IB

Answer 2

IA IB, IA i, IB i
A) 3