Polyploidy can be induced by the application of

Barr bodies (seen in saliva test in Olympic games) are found in human and are associated with

When two unrelated individuals or lines are crossed, the performance of $F_1$ hybrid is often superior to both its parents. This phenomenon is called

The traits controlled by the genes located on $X$ chromosome of human beings are said to be

Gene which suppresses other gene’s activity but does not lie on the same locus is called as