Blood grouping in human beings is derived from combinations of?

A. two different alleles
B. four different alleles
C. three different alleles
D. two different genes

Correct Answer:

Option A – two different alleles

Explanation

Humans are called diploid organisms because they have two alleles at each genetic locus, with one allele inherited from each parent. A given gene may have multiple different alleles, though only two alleles are present at the gene’s locus in any individual.