Now We Know Why Platypus Are So Weird - Their Genes Are Part Bird, Reptile, And Mammal

The first complete map of a platypus genome has just been released, and it’s every bit as strange as you’d expect from a creature with 10 sex chromosomes, a pair of venomous spurs, a coat of fluorescent fur, and skin that ‘sweats’ milk.


I heard a theory somewhere that some sort of bizarre random hybridization between an avian and early monotreme mammal may have been what produced the platypus and possibly even the echidna since both have avian beaks/bills.

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Awful headline, but the paper is cool:

Platypus and echidna genomes reveal mammalian biology and evolution


There are a lot of nonsensical theories around, certainly. Very bad headline.


Does not seem to be hybridization to me.

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