How Snakes Lost Their Legs
Scientists in Florida say they've pinpointed the genetic process that caused snakes to lose their legs, and found that embryonic pythons still form "cryptic leg skeletons," millions of years later.
Đọc thêm tại NPR
at October 21, 2016 at 12:46AM
Health & Science
Thứ Sáu, 21 tháng 10, 2016
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