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
Famous quotes containing the word rule:
“As a rule we develop a borrowed European idea forward, and ... Europe develops a borrowed American idea backwards.”
—Mark Twain [Samuel Langhorne Clemens] (1835–1910)