Genetics and Biometry Laboratory, Government of Orissa, Bhubaneswar-3, Orissa
*Text of a lecture delivered at a symposium on “Haldane's Contributions to Genetics” organised by the Indian Society of Genetics and Plant Breeding at Chandigarh in January, 1966. I am grateful to Dr. H. K. Jain for inviting me and making it possible for me to participate, and to Dr. Helen Spurway for help during the writing of the lecture.
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