Question

Can two people with brown eyes have a blue eyed baby

Answer 1

Answer:

Yes

Explanation:

Each person has two alleles (forms of a gene) for a characteristic. We can represent them using letters.

Dominant trait are written as capitals. If a dominant allele is present in someone's genotype, the dominant trait will show.

The recessive trait only shows if a person has two recessive alleles.

Brown eyes is a dominant trait, and blue eyes is a recessive trait.

B = dominant brown eyes

b = recessive blue eyes

If someone has brown eyes, their genotype can be:

BB

Bb

If someone has blue eyes, their genotype is:

bb

The baby's genotype must be bb because it has blue eyes. The baby gets one allele from each parent.

See the photo for Punnett square. If the parents are both Bb, then they could each give the b allele, resulting in a blue-eyed baby.