achondroplasia, a form of dwarfism in humans, is caused by a dominant allele. the probability of a heterozygous dwarf man and a normal, homozygous woman having a child who is a heterozygous dwarf is 50%.
achondroplasia is a genetic condition that causes dwarfness. It affects a protein called fibroblast growth factor receptor which causes abnormally slow growth of the bones and cartilage leading to small height.
When a trait is dominant in its character, the 50 % gametes formed will be having the dwarf characters hence there are 50 % chances of having a heterozygous dwarf allele.
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