Mother's milk holds the key to unlocking an evolutionary mystery from the last ice age
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April 27, 2018
(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.)
(THE CONVERSATION) As biologists explore the variation across the genomes of living people, they’ve found evidence of evolution at work. Particular variants of genes increase or decrease in populations through time. Sometimes this happens by chance. Other times these changes in frequency result from the gene’s helping or hindering individuals’ survival, a phenomenon known as selection. If a gene conferred a survival advantage, people with the mutation would have more offspring and...
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