171k views
3 votes
What does a non-functional H gene prevent?

A) A person from having any ABO blood type
B) A person from having the O blood type
C) A person from having the AB blood type
D) A person from being Rh-negative

1 Answer

4 votes

Final answer:

A non-functional H gene prevents a person from having the O blood type.

Step-by-step explanation:

A non-functional H gene prevents a person from having the O blood type. The ABO blood types are determined by the presence or absence of specific antigens on the surface of red blood cells. The H gene encodes an enzyme that adds carbohydrates to the protein receptors on red blood cells. Without functional H gene, the carbohydrate component is not added, resulting in the absence of A or B antigens on the surface of red blood cells, which is characteristic of the O blood type.

Therefore, option B) A person from having the O blood type is the correct answer.

User Chefjuanpi
by
7.5k points