.............. noted that behavior of chromosomes was parallel to the behavior of genes and used chromosome movement to explain Mendel's laws.

Experimental verification of the chromosomal theory of inheritance was done by

How was it concluded that genes are located on chromosomes ?

Discuss why Drosophila has been used extensively for genetical studies.

Briefly mention the contribution of $T.H.$ Morgan in genetics.

Why did Morgan work with the fruit flies ?