Jumping genes in maize were discovered by
Hugo de Vries
Barbara McClintock
T H Morgan
Mendel
What is the unit of crossing over
Some individuals with blood group -$A$ may inherit the genes for blonde hair, while other individuals with blood group -$A$ may the gene for brown hair. This can be best explained by the principle of
To be evolutionary successful, a mutation must be
Which of the following is not a hereditary disease?
A hereditary disease, which is never passed on from father to son is