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Our ancient primate ancestors likely gave birth to #twins as the norm, not the exception. The switch to single births happened at least 50 million years ago, according to anthropologists. theconversation.com/twins-were… #anthropology #evolution #pregnancy
Twins were the norm for our ancient primate ancestors − one baby at a time had evolutionary advantages
Twins are pretty rare, accounting for just 3% of births in the US these days. But new research shows that for primates 60 million years ago, giving birth to twins was the norm.The Conversation
