Change in the base sequence within a gene is called:

A trait that increases an organism's chance of survival is called:

The unit of heredity in our body is called

In pea, a pure tall plant (TT) is crossed with a short plant (tt). What wil be the ratio of pure tall plants to short plants in the F2 generation ?

Mutation in a virus is caused due to a change in its:

The process of finding the relative location of genes on a chromosome is called