The son, Seif, is born with sickle cell anemia. This means bothparents carry the allele for sickle cell anemia.
The father, Ahmad has a heterozygous genotype as told by thedoctor.
The mother can also be proved heterozygous for the trait sinceher mother was anemic. This means one of the affected alleles wasinherited from the mother.
So, the genotypes of Ahmad is Ss and that of Amina is Ss.
Gametes formed by Ahmad are S and s.
Gametes formed by Amina are S and s.
1 offspring having genotype SS does not carry the affectedallele and will be phenotypically normal.
2 offsprings having genotype Ss carry the affected allele butwill be phenotypically normal.
1 offspring having genotype ss have both affected alleles andwill be sickle cell disease.
Question:
Fill the tables by doing the calculations andtransforming your results into one ratio, fraction, and percentagefor each genotype and phenotype
As such:
ratio 1:2:1, Genotypes: BB ½ , 50%,Bb ¾75%                                               Â
Phenotype: wrinkled 75%,Smooth 25%
Ratio: |
Genotypes | | | |
Number | | | |
Fraction Form | | | |
Percentage | | | |
Ratio: |
Phenotypes | | | |
Number | | | |
Fraction Form | | | |
Percentage | | | |
