Final answer:
If two normally pigmented parents have an albino child, the possible genotypes of the parents could be heterozygous carriers (Aa) or homozygous recessive (aa) for the trait.
Step-by-step explanation:
In this case, if two normally pigmented parents have an albino child, it means that both parents must be carriers of the recessive allele for albinism. The possible genotypes of the parents could be either heterozygous carriers (Aa) or homozygous recessive (aa) for the trait.
If both parents have the heterozygous genotype (Aa), there is a 25% chance for them to have an albino child (aa) in each pregnancy. If both parents have the homozygous recessive genotype (aa), then they will always have an albino child.
It is important to note that the albino child could only inherit the albino phenotype if it receives the recessive allele from both parents.