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And internalfertilization can be a bit difficult if you don't have limbs to help you grasp your partner.
2
Like sharks the skeletons of chimaeras are composed of cartilage, and the males have claspers for internalfertilization of females.
3
The seminal plasma of some species with internalfertilization contains anti-aphrodisiac molecules that deter promiscuity in post-copulatory females, conferring fitness benefits to the ejaculating male.
Использование термина external fertilization на английском
1
By contrast, in some taxa with externalfertilization such as fish, exposure to semen promotes spawning behaviors.