Let us consider next what happens when a polydactyl individual is crossed with a normal individual.
It is also clear that the offspring of Silkie crosses are more apt to be polydactyl than those of Houdan crosses.
This inquiry is suggested by Castle's study (1906, p. 20) of polydactyl guinea-pigs.
polydactyl pol·y·dac·tyl (pŏl'ē-dāk'təl) or pol·y·dac·ty·lous (-tə-ləs)
Having more than the normal number of digits on a hand or foot.