Gene is heterozygous type B and Molly is homozygous B blood. What are all the possible blood types of their future children? Write it in genotype and phenotype percentages
All children of Gene and Molly will have B blood group only.
Gene has heterozygous type B blood. The genotype of Gene will be
Molly has homozygous type B blood. The genotype of Molly will be
Gametes contributed by Gene having dominant allele (
All gametes contributed by Molly will carry dominant allele (
Considering the possible combinations of gametes contributed by the parents to form oospore (zygote), all children will carry one dominant allele (
All the children thus will be phenotypically similar and will have B blood group, because dominant allele can express in phenotype whether in the homozygous or heterozygous state.
However, 50% of children will be homozygous (
A punnet square for the same is given below