人类就如果蝇
Monell Center的研究员发现到人类和果蝇喜欢共同的甜味。人类所喜欢的甜味并不是所有动物能接受的，就如可能和我们拥有共同祖先的猴子对甜味也有和人类不同的要求。
“Humans and flies have similar taste responses because they share similar environments and ecological niches, not because their sweet receptors are similar genetically,” notes senior author Paul A.S. Breslin, PhD, a Monell sensory geneticist. “Both are African species, both are omnivorous, and both historically are primarily fruit eaters.”
—— ScienceDaily: Like Sweets? You’re More Like A Fruit Fly Than You Think
对这现象的其中一种解释是因为人类和果蝇拥有共同的环境生存条件，所以在进化过程中才会演变出对口味极相似的感受器基因。写到这里忽然间想说自己很常说的冷笑话：“Time flies like arrow, fruit flies like banana.”
