Achondroplasia, a form of dwarfism, is caused by a mutation…

Achondroplasia, a form of dwarfism, is caused by a mutation in the FGFR3 gene. It follows an autosomal dominant inheritance pattern. If a person with achondroplasia (heterozygous) has a child with a person who does not have the condition, what is the probability that their child will inherit achondroplasia?