Question
6.
A child has sickle-cell disease ( ss ) but neither parent is ill. What must be true of her parents’ genotypes?
One parent has two recessive alleles.
The father is heterozygous; the mother is normal.
The mother is heterozygous; the father is normal.
Both parents are heterozygous carriers.
A child has sickle-cell disease ( ss ) but neither parent is ill. What must be true of her parents’ genotypes?
One parent has two recessive alleles.
The father is heterozygous; the mother is normal.
The mother is heterozygous; the father is normal.
Both parents are heterozygous carriers.
Answers
GPT 3.5
Both parents must be heterozygous carriers (Ss).