Knowra J. B. S. Haldane J. B. S. Haldane J. B. S. Haldane was a British geneticist and evolutionary biologist whose mathematical work helped establish population genetics and the modern evolutionary synthesis.
Population genetics : The study of genetic variation and changes in allele frequencies within populations. Its central mathematical framework grew from Haldane’s analyses of selection and inheritance.
Ronald Fisher : A British statistician and geneticist whose work founded modern statistical theory and population genetics. Fisher developed a parallel mathematical account of selection, often debated alongside Haldane’s.
Haldane's rule : The observation that, in many animal hybrids, the heterogametic sex is absent, rare, or sterile. Haldane identified this recurring pattern in crosses between related species.
University of Cambridge : A collegiate research university in Cambridge, England, founded in 1209. Haldane studied and began his scientific career at Cambridge.
Daedalus; or, Science and the Future : A 1924 essay by J. B. S. Haldane imagining how scientific advances might transform society. Haldane used speculative writing to explore the social consequences of biological research.
Natural selection : The process by which heritable traits affecting reproductive success change in frequency across generations. Haldane quantified how selection changes the frequencies of genetic variants.
Sewall Wright : An American geneticist who developed influential theories of genetic drift, inbreeding, and evolutionary change. Wright was the third major founder of theoretical population genetics.
Sickle-cell disease : An inherited blood disorder caused by variants in the gene encoding beta-globin. Haldane proposed that malaria could maintain harmful blood disorders through heterozygote advantage.
Mendelian genetics : The branch of genetics based on the inheritance patterns first described by Gregor Mendel. Haldane’s evolutionary mathematics emerged from the rediscovery and study of Mendelian inheritance.
Marxism : A political and economic tradition derived from the writings of Karl Marx and Friedrich Engels. Haldane’s Marxist commitments shaped his public views on science, politics, and society.
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