A woman with a gap between the incisors who does not have polydactyly married a man with tightly
A woman with a gap between the incisors who does not have polydactyly married a man with tightly spaced incisors, but had an operation to remove her extra fingers in childhood. What children can be born to these spouses if the man’s mother has the same phenotype as his wife (i.e., with a gap between the incisors, not having polydactyly)?
A – polydactyly, a – the norm, B – the gap between the teeth, b – densely spaced teeth. A woman with a gap between the incisors, who does not have polydactyly, has the aaBb genotype, married a man with polydactyly and with densely spaced incisors, who has the Aabb genotype. A man’s mother has the same phenotype as his wife.
Parents: (man’s mother) aaBb × AAbb (man’s father)
Gametes: aB ab ab
Offspring: AaBb child with polydactyly and with a gap between the incisors, Aabb child with polydactyly and densely spaced teeth.
Parents: aaBb × Aabb
Gametes: aB ab Ab ab
Prospective offspring: AaBb child with polydactyly and a gap between the teeth, aaBb child with a gap between the teeth, Aavb child with polydactyly, aavb healthy child.