Their findings show that the first snapdragons – which grew around 12 million years ago – were bald, and that newer, alpine species evolved as a result of mutations that deactivated the gene

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Baldness gene discovery reveals origin of hairy alpine plants - Deadline News
Scientists have solved a puzzle that has long baffled botanists – why some plants on high mountainsides are hairy while their low-lying cousins are bald. Alpine species of snapdragon have evolved to disable a gene that prevents those living at low la

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