Concept explainers
Inheritance regarding two un+linked genes, two loci with separate alleles from the mother, and two alleles from the father that results in an organism's genotype for those specific genes.
A hereditary disease exists among humans called phenylketonuria, which is an autosomal recessive mutant allele. The father is homozygous for this condition where the mother is a carrier. The father is also bow-legged and heterozygote for this trait where the mother has straight legs.
a.) show parents genotype for these two traits
b.) Their first child was a daughter with straight legs and phenylketonuria. What was the probability for that to occur?
c.) What was the probability that her future siblings were to be a brother and a sister (no particular order of sex) who are carriers of the disease and the brother to be bow-legged whilst the sister having straight legs?
d.) If adding the blood types of the parents where the father is AB and the mother to be A. What is the probability for this couple to have yet another son being straight-legged, expressing phenylketonuria with blood type O?
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