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Adaptive Radiation
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Adaptive Radiation
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Creationism Term Analysis |
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Darwin (Unit of Measurement)
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Only varieties. If so, they would fit comfortably within the orthodox view of life. But what if they were something more than varieties? […] What if there were no limits to their divergence? What if they had diverged first into varieties, and then gone right on diverging into species. new species, each marooned on its own island?
“—If there is the slightest foundation for these remarks,” Darwin wrote, “the zoology of Archipelagoes—will be well worth examining; for such facts undermine the stability of Species.” Then, in a scribble that foreshadowed two decades of agonized caution, Darwin inserted a word: “would undermine the stability of Species.”