SCIENCE BUZZ – Scientists have mapped the bizarre DNA of the duck-billed platypus. Citing it as a key to understanding all mammalian evolution, scientists noted the platypus also has 10 different sex chromosomes, instead of just X or Y, and say it may finally solve the question about the origin of the scrotum.

The Best Links:

1. There’s a Reason the Platypus Looks So Weird
2. The Platypus Has Ten Sex Chromosomes, Whereas We Have But Two
3. The Platypus: It Ain’t No Evolutionary Accident!
4. “Platypus Genes Hint at Scrotum’s Origin”
5. The Long-Term Story of the Platypus

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