Why some of Darwin's finch nestlings have yellow beaks

Carotenoids are the underlying pigment for much of the enormous variety of color found across birds and form the basis for the colors red, yellow and orange. In a study published in Current Biology, researchers from Uppsala ...

Solving a long-standing biological search problem

How the cell can mend broken DNA using another DNA copy as template has puzzled researchers for years. How is it possible to find the correct sequences in the busy interior of the cell? Researchers from Uppsala university ...

A single cell type map of human tissues

In a study published in the US journal Science Advances, a single cell type map of human tissues is presented. An open access atlas has been launched with more than 250,000 interactive plots to allow researchers to explore ...

Males help keep populations genetically healthy

A few males are enough to fertilize all the females. The number of males therefore has little bearing on a population's growth. However, they are important for purging bad mutations from the population. This is shown by a ...

The entire genome from Peştera Muierii 1 sequenced

For the first time, researchers have successfully sequenced the entire genome from the skull of Peştera Muierii 1, a woman who lived in today's Romania 35,000 years ago. Her high genetic diversity shows that the out of Africa ...

Molecular biologists travel back in time 3 billion years

A research group working at Uppsala University has succeeded in studying 'translation factors' – important components of a cell's protein synthesis machinery—that are several billion years old. By studying these ancient ...

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