Geneticist who analyzed the relationship between sex chromosomes and hybrid sterility. Haldane’s 1922 paper identified the recurring association of absent, rare or sterile hybrid offspring with the heterogametic sex.[ref]
Sex ratio and unisexual sterility in hybrid animals by J. B. S. Haldane. Title, author list and reported study
Portrait of J. B. S. Haldane
. Author not identified on the file page; source: University of Washington modern-synthesis image collection. Public domain in the United States (PD-US). Source usage terms, via Wikimedia Commons. Source.
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