For sickle-cell diease, assume S is the dominant allel and s the recessive allele. Which genotypes are possible for offspring of a carrier (Ss) and a person who lacks the sickle-cell allele (SS) ?

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Damian Clay

Biology

19 March, 08:02

For sickle-cell diease, assume S is the dominant allel and s the recessive allele. Which genotypes are possible for offspring of a carrier (Ss) and a person who lacks the sickle-cell allele (SS) ?

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Victor Frey · Answer 1

The genotypes possible for the offspring are SS, Ss, SS, and Ss. Therefore, there is a 50% chance that one of the offspring is a carrier, and a 0% chance that one of the offspring has sickle-cell disease itself.