Question

if two parents are heterozygous for type a blood, what is the probability that their offspring would have type o blood? 50% 100 % 75% 25%

Explanation:

Step1: Determine Genotypes

Heterozygous type A blood means genotype \( I^A i \) (where \( I^A \) is allele for A, \( i \) for O).

Step2: Set Up Punnett Square

Parents: \( I^A i \times I^A i \). Gametes: \( I^A, i \) from each.
Punnett Square:

	\( I^A \)	\( i \)
\( i \)	\( I^A i \)	\( i i \)

Step3: Calculate Probability

Type O is \( i i \). From square, 1 out of 4 (25%) is \( i i \).

Answer:

25% (the option with "25%")