What is a dominant genetic condition characterized by small body size?

A dominant genetic condition characterized by small body size is Achondroplasia. This disorder is a form of skeletal dysplasia that affects bone growth, leading to disproportionate short stature, particularly in the limbs. It is caused by a mutation in the FGFR3 gene, which regulates bone growth and development. Individuals with Achondroplasia typically have an average-sized trunk but shorter arms and legs compared to their body.