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Scientists find DNA is packaged like a yoyo

To pack two meters of DNA into a microscopic cell, the string of genetic information must be wound extremely carefully into chromosomes. Surprisingly the DNA's sequence causes it to be coiled and uncoiled much like a yoyo, ...

dateMar 16, 2015 in Cell & Microbiology
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When butterfly male sex-bias flaps its wings

In butterflies, sex is determined by chromosome differences between males and females. But unlike in humans with the familiar X and Y, in butterflies, it is the females that determine the sex of offspring.

dateJul 06, 2017 in Evolution
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