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W.S. Sutton and T. Boveri proposed the “chromosomal theory of inheritance” in 1902 and confirmed by T.H. Morgan in 1933. These two workers observed a closed similarity between the transmission of hereditary traits and behaviour of chromosomes while passing from one generation to the next through male and female gametes.
The Chromosomal Theory of inheritance, proposed by Sutton and Boveri, states that chromosomes are the vehicles of genetic heredity. Neither Mendelian genetics nor gene linkage is perfectly accurate; instead, chromosome behavior involves segregation, independent assortment, and occasionally, linkage.