Question

ap biology october 6 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 A - blood allele and $i$ represent the O - blood allele. The father's genotype is $I^A i$ and the mother's genotype is $I^A i$.

Step2: Set up Punnett - square

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

Step3: Analyze results

The possible genotypes of the offspring are $I^A I^A$ (type A), $I^A i$ (type A), and $ii$ (type O). Since the $ii$ genotype corresponds to type O blood, it is possible for the parents to have a child with type O blood.

Answer:

Yes, it is possible for the parents to have a child with type O blood as the Punnett - square shows that the genotype $ii$ (type O) is a possible outcome of the cross between two heterozygous type A individuals ($I^A i$).