Polydactyly

Preaxial polydactyly: Ectopic Shh-expression, Hemingway mutant, mouse, right forelimb

Polydactyly or polydactylism (fromGreekπολύς (polys), meaning "many",andδάκτυλος (daktylos), meaning "finger"), also known as hyperdactyly, is a congenital physical anomaly in humans, dogs, and cats having supernumerary fingers or toes. Polydactyly is the opposite of oligodactyly (fewer fingers or toes).

单词	Supernumerary finger
释义	Supernumerary finger 英语百科 Polydactyly Polydactyly or polydactylism (fromGreekπολύς (polys), meaning "many",andδάκτυλος (daktylos), meaning "finger"), also known as hyperdactyly, is a congenital physical anomaly in humans, dogs, and cats having supernumerary fingers or toes. Polydactyly is the opposite of oligodactyly (fewer fingers or toes).
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Supernumerary finger

Polydactyly