Question

There are four blood types: A, B, AB, and O. AB is the codominant blood type. Which blood type must be recessive?(1 point)
Responses

AB
AB

O
O

A
A

B

Answers

GPT-4o mini
In the context of blood types, the recessive blood type is O. Blood type O is considered recessive because both alleles must be O for an individual to have blood type O. A and B blood types are either dominant or codominant respectively, with AB being the result of the combination of A and B alleles. Therefore, the correct response is:

O