Abstract
IN a recent communication1, Dr. A. J. Cain holds that we must now accept that there is no evolution of non-adaptive—or neutral—characters in Nature. He holds this on the ground that certain characters that were previously thought to be neutral have been shown to be correlated in distribution with environmental conditions, and may therefore have some selective value. He thinks that selective value should be assumed in all characters until the contrary is proved.
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References
Cain, A. J., Nature, 168, 424 (1951).
For example, Wright, S., Amer. Scientist, 39, 452 (1951).
Wright, S., Gen., 16, 97 (1931).
Carter, G. S., “Animal Evolution” (London, 1951).
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CARTER, G. Non-adaptive Characters in Evolution. Nature 168, 700–701 (1951). https://doi.org/10.1038/168700b0
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DOI: https://doi.org/10.1038/168700b0
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