Experimental verification of chromosomal theory of inheritance was done by
It was only after several years of carrying outcrosses with the fruit fly, Drosophila melanogaster, that Thomas Hunt Morgan provided experimental evidence to support the Chromosomal Theory of Inheritance.
Boveri and Sutton's chromosome theory of inheritance states that genes are found at specific locations on chromosomes and that the behaviour of chromosomes during meiosis can explain Mendel's laws of inheritance.