Discover: Sex, Ys, and PlatypusesInstead of the XY/XX chromosomes that most mammals have, the platypus has a much more complicated sex chromosomes: five pairs instead of one. The male platypus is XYXYXYXYXY. That's the biggest number of sex chromosomes of any vertebrate. Man, platypus is weird. And so are the others. Christian Science Monitor: Pepsi […]
All that stands between the world and a living, breathing wooly mammoth is $10M. I’m in for $20.