Question

ap biology problem #1 a man wants to know if he is the father of a certain child. the father is heterozygous for a blood and the child has o blood. if the mothers blood type is also heterozygous a, is it possible for this to have conceived a child with type o blood. explain in a punnett square.

Explanation:

Step1: Define alleles

Let $I^A$ represent the allele for blood - type A and $i$ represent the allele for blood - type O. The father and mother are both heterozygous A, so their genotypes are $I^A i$.

Step2: Set up Punnett - square

The possible gametes from the father are $I^A$ and $i$, and the possible gametes from the mother are also $I^A$ and $i$.

	$I^A$	$i$
$i$	$I^A i$	$ii$

Step3: Analyze genotypes

The genotypes of the offspring are $I^A I^A$ (homozygous A), $I^A i$ (heterozygous A), and $ii$ (type O). The probability of having a child with type O blood ($ii$) is $\frac{1}{4}$.

Answer:

Yes, it is possible. The Punnett - square shows that when both parents are heterozygous for blood - type A ($I^A i$), there is a 25% chance of having a child with type O blood ($ii$).