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In humans, the ABO blood group, the A and B alleles produce proteins in the surf

ID: 190363 • Letter: I

Question

In humans, the ABO blood group, the A and B alleles produce proteins in the surface of red blood cells while the O allele produces nothing. The following genotypes are possible:
OO AO AA BO BB AB
Compared to the B allele the A allele would be: A. dominant B. recessive C. incompletely dominant D. codominant In humans, the ABO blood group, the A and B alleles produce proteins in the surface of red blood cells while the O allele produces nothing. The following genotypes are possible:
OO AO AA BO BB AB
Compared to the B allele the A allele would be: A. dominant B. recessive C. incompletely dominant D. codominant
OO AO AA BO BB AB
Compared to the B allele the A allele would be: A. dominant B. recessive C. incompletely dominant D. codominant

Explanation / Answer

The correct answer is D) codominant.

In ABO blood grouping system, A and B alleles are dominanat over i because AO and BO genotypes show A and B blood groups, respectively. A and B alleles are codominant because AB genotype shows AB blood group. So, option D) codominat is correct.