Saturday, June 19, 2021

Genetic Evolution

At the mercy of natural selection since the dawn of life, our ancestors adapted, mated and died, passing on tiny genetic mutations that eventually made humans what we are today.

But evolution isn't bound strictly to genes anymore, a new study suggests. Instead, human culture may be driving evolution faster than genetic mutations can work.

In this conception, evolution no longer requires genetic mutations that confer a survival advantage being passed on and becoming widespread. Instead, learned behaviors passed on through culture are the "mutations" that provide survival advantages. 

This so-called cultural evolution may now shape humanity's fate more strongly than natural selection, the researchers argue.

"When a virus attacks a species, it typically becomes immune to that virus through genetic evolution," study co-author Zach Wood, a postdoctoral researcher in the School of Biology and Ecology at the University of Maine, told Live Science. Such evolution works slowly, as those who are more susceptible die off and only those who survive pass on their genes.  TO READ MORE, CLICK HERE...

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