Explanation

Chromosomal theory of inheritance was proposed by Walter Sutton and T. Boveri in 1902. Sutton and Boveri made a correlation between Mendel’s conclusion about genes and the behaviour of chromosome during mitosis and meiosis. Polygenes show quantitative inheritance. Nilsson Ehle (1909) explained it in Kernel colour of wheat and Davenport (1910) for skin colour in humans.