Question

30 POINTS , if you answer this question and Right

For sickle-cell disease, assume S is the dominant allele 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)?


A. SS, ss

B. ss only

C. SS, Ss

D. SS only

Answer 1

SS, Ss is the answer

Answer 2

C. SS, Ss

Step-by-step explanation:

Remember when doing the recessive alleles and dominant alleles you just need to do a punnet square, putting both alleles of the parents and set up the possibilities of the offspring.:

Mother

Father S s

S SS Ss

S SS Ss

So the four options are only SS and Ss, so the recessive gene will never actually be developed because the dominant is present in all of the combinations.