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hemipenes

   Also found in: Encyclopedia, Wikipedia 0.01 sec.
hemipenes
paired, vascular, eversible sacs which open into the posterior cloaca in snakes and lizards. The two hemipenes are brought together to act as a penis and are inserted into the cloaca of the female during copulation.


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Males have a double penis, called hemipenes, also found in some snakes and other lizards.
Reasons for longer tails in males are that hemipenes are housed in the base of the tail and males with longer tails are more successful breeders than short-tailed or stub-tailed males (Shine et al.
01 gram and its sex determined by eversion of the hemipenes in males (Gregory & Larsen 1996).
 
 
 
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