Articles on Genes

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Hand development is shaped by evolution, biology and environment. Cunaplus_M.Faba/iStock via Getty Images Plus

Why are our fingers different lengths?

Your fingers’ lengths are just one feature of many that let your hands grasp, press, pull and otherwise interact with the world.
Inuit people such as these Greenlanders have evolved to be able to eat fatty foods with a low risk of getting heart disease. Olivier Morin/AFP via Getty Images

If evolution is real, then why isn’t it happening now? An anthropologist explains that humans actually are still evolving

We are indeed still evolving, though it can be hard to tell because it happens over generations and often involves things you can’t see, such as what foods different people are able to digest.
Some mammals are super hairy, some are not. Ed Jones/AFP via Getty Images

Why don’t humans have hair all over our bodies?

Human beings don’t have a thick coat of fur like many other mammals do. Scientists think it has to do with something else that comes out of skin: sweat.
RNA is more than just a transitional state between DNA and protein. Christoph Burgstedt/Science Photo Library via Getty Images

MicroRNA is the Nobel‑winning master regulator of the genome – researchers are learning to treat disease by harnessing how it controls genes

Victor Ambros and Gary Ruvkun won the 2024 Nobel Prize in physiology or medicine for their discovery of microRNAs, molecules that turn genes on and off – and cause disease when they go awry.

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