[ad_1] The descending testicles were probably present in the first mammals, then disappeared in elephants, manatees and their parents, according to a new study. Image Male elephants in the park of Addo …
Read More »[ad_1] The loss of anatomical features is a frequent evolutionary event. For example, humans and other great apes lost their tails and whales lost their legs. The most convincing evidence comes from …
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[ad_1] Most male mammals carry valuable cargoes in a terribly precarious package. The external testicles – which sway gently outside the abdominal cavity in a thin-skinned bag exposed – are sensitive, fussy, …
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