Variations and Mutations Test 05 Preparation Online

1. A mutation means?

A. A change affecting the offsprings in F2, generation

B. A change that is inherited

C. A change affecting only the parents but never inherited

D. A change responsible for growth of organism

2. Generally the mutations are?

A. Harmful

B. Recessive

C. Useful

D. Dominant

3. Mutations in an organism are?

A. Characters acquired by organisms during their lifetime

B. Changes that are heritable

C. Changes that are inheritable

D. Changes that mayor may not be heritable

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

A. Both (a) & (b)

B. None of these

C. Recessiveness

D. Dominance

5. A sudden heritable change is called?

A. Seggregation

B. None of these

C. Variation

D. Mutation

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

A. X-rays

B. Alpha-rays

C. Beta-rays

D. None of these

7. Which of the following chemicals can induce mutations?

A. Caffeine

B. All of these

C. Camphor

D. Morphine

8. Mutations are respobsible for bringing?

A. Increase in population rate

B. Large variations in the organisms

C. Very minute undetectable variations in organism

D. Better as well as useful changes in organisms

9. 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?

A. None of these

B. Partially wrong

C. Correct

D. Wrong

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

A. Reproductive isolation

B. Genetic variation

C. None of these

D. Genetic drift

Variations and Mutations Test 05 Preparation Online

Variations and Mutations Test 05 Preparation Online

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