ahlam1399
07-02-2018, 04:53 PM
Descending testicles were likely present in the earliest mammals, then subsequently disappeared in elephants, manatees and their relatives, according to a new study.
أكثر... (https://www.nytimes.com/2018/06/29/science/descending-testicles-evolution.html?partner=rss&emc=rss)
أكثر... (https://www.nytimes.com/2018/06/29/science/descending-testicles-evolution.html?partner=rss&emc=rss)