Haldane's rule represents a fundamental observation in early mechanisms of the process of speciation. It was formulated in 1922 by the British evolutionary biologist J.B.S. Haldane:
"When in the F1 offspring of two different animal races one sex is absent, rare, or sterile, that sex is the heterozygous sex ."Read more about Haldane's Rule: Description, Hypotheses, Exceptions
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“Good taste is either that which agrees with my taste or that which subjects itself to the rule of reason. From this we can see how useful it is to employ reason in seeking out the laws of taste.”
—G.C. (Georg Christoph)