Question

Which of the following characteristics represent' Inheritance of blood groups' in humans ?
a. Dominance
b. Co-dominance
c. Multiple dominance
d. Incomplete dominance
e. Polygenic inheritance
(1) b, c and e (2) a, b and c
(3) b, d and e (4) a, c and e

Answer 1

Correct option (2) a, b and c

Explanation

Dominance, codominance and multiple alleles are the characteristics that represent 'inheritance of blood groups' in humans. * blood groups are determined by the gene I. There are multiple (three) alleles; IA, IB and I0 of this gene. Allele IA and IB are dominant over I0. However, when IA and IB aIIeles are present together, they show codominance.**

Therefore, option (2) is correct.