No Pharyngula, um excelente post sobre o genoma do ornitorrinco. O artigo é interessante pelo seu didatismo, e o recomendo a todos que se interessem por biologia moderna.

Um trecho curioso:

“The platypus secretes a true milk, loaded with all of those goodies. One of the predominant proteins in milk is a phosphoprotein called casein, which is thought to have originated by a duplication of a tooth enamel matrix protein gene, of all things. These tooth genes, enamelin and ameloblastin, are clustered with the casein genes in both platypus and the mouse, suggesting that the kind of sophisticated lactation abilities we share arose prior to the Jurassic.“

O leite vem do dente! Taí, quem inventou a expressão “dente-de-leite” jamais imaginaria que era o contrário…