Sudden heritable changes are called

1. Linkages

2. Mutations

3. Recombinations

4. Natural selection

Theory of 'Saltations' was given by 

(1) G Mendel

(2) Hugo de Vries

(3) J B S Haldane

(4) H J Miller

Single step large mutation leading to
speciation is also called
1. Founder’s effect
2. saltation
3. branching descent
4. natural selection

In a random mating population in equilibrium, which of the following brings about a change in gene frequency in a non-directional manner?