Thanks, I was just lifting that from the wiki article (arthropods are animals too, and they don't have XY chromosomes either, of course). Those crazy feathered

Thanks, I was just lifting that from the wiki article (arthropods are animals too, and they don't have XY chromosomes either, of course). Those crazy feathered therapods! Plus, nucleated red blood cells[1]. 1: http://www.askabiologist.org.uk/answers/viewtopic.php?id=9296 http://www.askabiologist.org.uk/answers/viewtopic.php?id=929...