I wanna say it’s b but if not I’m so sorry !
Answer: by the addition of one phosphate group
Explanation:
Answer: The genotype of the child is aa
Explanation:
Both parents are normally pigmented but the child has albinism. We know that albinism is a recessive trait.
This tells us that the parents were heterozygous for albinism (Aa)
Each parent carried the recessive allele for albinism and passed it down to their child.
The parents are normally pigmented because the dominant allele (normal) masked the recessive albinism allele.