Sea lampreys jettison one-fifth of their genome
Monday, July 20, 2009 - 15:35
in Biology & Nature
(PhysOrg.com) -- Researchers have discovered that the sea lamprey, which emerged from jawless fish first appearing 500 million years ago, dramatically remodels its genome. Shortly after a fertilized lamprey egg divides into several cells, the growing embryo discards millions of units of its DNA.
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