Scientists have discovered that tiny ‘microchromosomes’ in birds and reptiles, initially thought to be specks of dust on the microscope slide, are linked to a spineless animal ancestor that lived 684 million years ago. They prove to be the building blocks of all animal genomes, but underwent “dizzying rearrangement” in mammals, including humans.
Click here for original story, Researchers identify bird and reptile ‘microchromosomes’ once thought to be dust specks on a microscope slide
Source: Phys.org