2
QuizMultiple Choice

Lab: Heredity and Punnett Squares — Unit test

Question 2 • FL-2002070-M/J Comprehensive Science 2

Which statement describes the blood type of a person with the alleles IAi?

Answer
A
It is type AB because I and i are codominant.
B
It is type AB because A and i are codominant.
C
It is type A because i is dominant and A is recessive.
D
It is type A because A is dominant and i is recessive.

Explanation

The IA allele produces the A antigen, while the i allele produces no A or B antigen. Since IA is dominant over i, a person with alleles IAi has type A blood. Thus, the correct statement is “It is type A because A is dominant and i is recessive.”

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