1. A sudden heritable change is called?

2. A mutation means?

3. Mutations are respobsible for bringing?

4. Role of nutation in the process of organic evolution is?

5. Muller induced mutation in Drosophila melanogester by exposure to?

6. Currently it is held that somatic variations are not inherited, while heritable mutations which help organism in adoption are selected by "Nautre" and get maximum chance for transmission to future generations and form basis of evolution. State whether this statement is?

7. Mutations in an organism are?

8. Which of the following chemicals can induce mutations?

9. In which of the following conditions of gene, the pregnancy of mutant gene is expected to increase in a population?

10. Generally the mutations are?