In modern people, this protein has the form of I197V, which is not found in Neanderthal, Denisovs and other animals.
As part of the experiment, researchers using CRISPR technology introduced the human version of Nova1 mice.
As a result, the sound patterns of the animals showing a possible connection with the sound communication of the protein have changed. The analysis revealed the effect of Nova1 on genes associated with the development of speech functions.
Interestingly, only six of the genomes of more than 600 thousand modern people are an old version of protein.
Researchers argue that the mutation in the ancestors in Africa has become an evolutionary advantage, facilitates communication in the group and probably contributes to the development of the speech.
Source: Ferra
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