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Awareness of the prevalence of this disease in Persian cats helped breeders make the best decisions when breeding individual cats, which likely led to the decrease in the diseasersquo;s gene frequency.

This change in gene frequency is evolution, and in this case has come about by a process called artificial selection.

I would love to see a board game exploring the dynamics of natural selection within species, through changes in gene frequency.

Mapping out samples collected from different elephant groups across the continent, they were able to design a map where each elephant area had it’s own unique gene frequency–in other words, a geotagging system for elephant poo.

What has been really lacking is agreement over what's driving the gene frequency up - it's selective advantage.