Question

jessicas mother has the blood type ab and her father has the blood type o. which blood type could jessica have? draw a punnett square on scratch paper to help you answer the question, if needed.
a
ab
o
phenotypes and genotypes of blood types
blood type and allele | possible genotypes and alleles
a (i^a) | aa or ao (i^a i^a or i^a i)
b (i^b) | bb or bo (i^b i^b or i^b i)
ab (i^a i^b) | ab (i^a i^b)
o (i) | oo (ii)

Explanation:

Step1: Determine Parental Genotypes

Mother: AB (\(I^A I^B\)), so she can pass \(I^A\) or \(I^B\).
Father: O (II), so he can only pass \(I\).

Step2: Create Punnett Square

	\(I^A\)	\(I^B\)
\(I\)	\(I^A I\)	\(I^B I\)

Step3: Interpret Genotypes

• \(I^A I\) → Blood Type A
• \(I^B I\) → Blood Type B

From options, only A is a possible result (B is also possible, but A is an option here).

Answer:

A. A