Five types of<unk>  have been identified in humans. The corresponding loci associated with these types and their common phenotypical expression are as follows: * type I: 2q34-q36; webbing occurs between middle and ring fingers and/or second and third toes. * type II: 2q31; also involves long and ring fingers, but has a sixth finger merged in between. * type III: 6q21-q23; small finger is merged into the ring finger. * type IV: 7q36; involves all fingers and/or toes. * type V: 2q31-q32; similar to type I, but the metacarpals and metatarsals may also be fused. Radiograph of Type 1<unk>  of the hands (no bony involvement)
Syndactyly
Clinodactyly
Oligodactyly
Polydactyly
Sclerodactyly
Synpolydactyly
Ectrodactyly
Brachydactyly