Genetics
Scientists have found that achondroplasia is most likely caused by a mutation in the fibroblast growth factor receptor 3 (FGFR3) gene. Eighty percent of the population get the disorder form the mutation. Although the cause of this mutation is unknown. The disorder can also be inherited. Since dwarfism is a dominant allele it is more likely to get the disorder if one or both parents are affected. If one parent has achondroplasia than there is a fifty percent chance of the offspring to inherit the disorder. However if both parents have the disorder there is a twenty-five percent chance of the offspring having a homozygous gene. This is a severe version of achondroplasia, and the offspring live less than 12 months.