Scientists traced the origins of yeast’s mysterious tiny centromeres to ancient “jumping genes,” revealing how evolution repurposed rogue DNA into vital chromosome machinery. Credit: Shutterstock Centromeres serve the same fundamental purpose across nearly all forms of life. These regions of DNA ensure that chromosomes are properly separated when cells divide. Despite this shared role, centromeres vary dramatically in their structure. Some organisms have large stretches of repetitive DNA, while

Tag-uri: DNA