Confidential Genetic Files Never Leave Headquarters!
Original genetic instructions stay behind in the main office. Cells copy genetic information into RNA, then use many of those messages to build proteins.
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Original genetic instructions stay behind in the main office. Cells copy genetic information into RNA, then use many of those messages to build proteins.
Humans and other haplorhine primates are exposed sharing a broken Vitamin C gene. Cats and dogs kept the factory running. Guinea pigs broke theirs separately.
Most mammals reduce lactase production after weaning. Some humans evolved genetic variants that keep the milk-digesting enzyme active into adulthood, making lactose tolerance the derived trait.