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Science

Scientists Breed Big-Brained Guppies To Demonstrate Evolution's Trade-Offs 121

An anonymous reader writes "Scientists have long suspected that big brains come with an evolutionary price — but now they've published the first experimental evidence to support that suspicion, based on their efforts to breed big-brained fish. A Swedish team found it relatively easy to select and interbreed common guppies to produce bigger (or smaller) brains — as much as 9.3 percent bigger, to be precise (abstract). But the bigger-brained fish also tended to have smaller guts and produce fewer babies."
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Scientists Breed Big-Brained Guppies To Demonstrate Evolution's Trade-Offs

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IN MY OPINION anyone interested in improving himself should not rule out becoming pure energy. -- Jack Handley, The New Mexican, 1988.

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