Question

Harry Potter has blue eyes, a recessive trait. Lily Potter has blue eyes, while James Potter has brown eyes (Bb). what was the probability for Harry to get blue eyes? Create a Punnett Square

Answer 1

Step-by-step explanation:

since both Harry's parents have blue eyes, they both must have two copies of the recessive allele for blue eyes (bb). James Potter is heterozygous (Bb), which means he has one dominant allele for brown eyes (B) and one recessive allele for blue eyes (b).

We can represent the genotypes of Harry's parents as follows:

Lily Potter: bb

James Potter: Bb

To determine the probability of Harry inheriting blue eyes, we can use a Punnett square:

B b

b Bb bb

b Bb bb

From the Punnett square, we can see that there is a 50% chance that Harry will inherit the recessive b allele from each of his parents. Therefore, the probability of Harry having blue eyes is 0.5 x 0.5 = 0.25 or 25%.

So, the probability of Harry having blue eyes is 25%.