EVERYDAY SCIENCE

Detailed explanation-1: -All male snakes have two paired intromittent organs that lie invaginated in pouches in the ventral tail base. Each is called a hemipenis (plural, hemipenes). Hemipenial morphology has proven to be a valuable taxonomic character. During copulation, a hemipenis evaginates into the cloaca of the receptive female.

Detailed explanation-2: -Unlike the penis of turtles and crocodiles, the copulatory organ of lizards and snakes is paired, with each unit being called a hemipenis. The hemipenes of lizards and snakes are elongated tubular structures lying in the tail.

Detailed explanation-3: -Snakes and lizards have not just one, but two penises, called hemipenes. University of Sydney researcher Christopher Friesen says having two hemipenes may benefit males during mating.

Detailed explanation-4: -Male snakes and lizards posses paired copulatory organs called hemipenes that normally range in color from pink to black. Hemipenes sit within pouches at the base of the tail just caudal to the cloaca (Fig 4, Fig 5). They are connected to the testes by the ductus deferens, and each hemipenis is functionally complete.

Detailed explanation-5: -The hemipenes are a pair of intermittent organs found only in the snakes and lizards. They are located in a pocket found at the base of the tail behind the cloaca. To ensure sperm transport, the hemipenes is grooved and the tip is rough or spinous.