A medical technician is analyzing a blood sample in a clinical lab.It is determined that the red blood cells have both A antigens and B antigens present on their surface.In this case,the red blood cells are exhibiting a genetic characteristic known as:
A) Simple dominance
B) Incomplete dominance
C) Partial dominance
D) Semi-dominance
E) Codominance

Question

Quizplus · Accepted Answer

When both alleles for a gene are expressed equally, it is known as codominance. In the case of blood types, the A and B alleles are codominant, meaning if an individual inherits both alleles, then both A and B antigens will be present on their red blood cells. This is different from incomplete dominance or partial dominance, where one allele is not fully expressed in the presence of the other allele. Simple dominance and semi-dominance do not apply to this scenario because both alleles are equally expressed.

A Medical Technician Is Analyzing a Blood Sample in a Clinical