Researchers link a gene to the emergence of spoken language
AP
Why did humans start speaking? Scientists suggest genetics played a big role – and they say the evolution of this singular ability was key to our survival.
A new study links a particular gene to the ancient origins of spoken language, proposing that a protein variant found only in humans may have helped us communicate in a novel way. Speech allowed us to share information, coordinate activities and pass down knowledge, giving us an edge over extinct cousins like Neanderthals and Denisovans.
-snip-
The genetic variant researchers were looking at was one of a variety of genes “that contributed to the emergence of Homo sapiens as the dominant species, which we are today” said Dr. Robert Darnell, an author of the study published Tuesday in the journal Nature Communications.
Darnell has been studying the protein – called NOVA1 and known to be crucial to brain development – since the early 1990s. For the latest research, scientists in his lab at New York’s Rockefeller University used CRISPR gene editing to replace the NOVA1 protein found in mice with the exclusively human type to test the real-life effects of the genetic variant. To their surprise, it changed the way the animals vocalized when they called out to each other.
https://apnews.com/article/speech-genetics-humans-neanderthals-2e1f956c9c794706000162072f0c0c41