Complex sentence: FOP or Stone Man Syndrome is an autosomal dominant disorder that affects individuals who are heterozygous with a homozygous recessive partner, therefore their children will have 50% chance of being affected.
Split into simpler sentences: FOP or Stone Man Syndrome is an autosomal dominant disorder that affects individuals who are heterozygous with a homozygous recessive partner. Therefore their children will have 50% chance of being affected.