In the apparatus of Urey and Miller experiment, the gases [G] contained in the flask are :

 

1. Methane, Carbon dioxide, Ammonia and Water vapour
2. Methane, Hydrogen cyanide, Ammonia and Water vapour
3. Methane, Ammonia, Hydrogen and Water vapour
4. Carbon dioxide, Oxygen, hydrogen and ammonia 

Lamarck's theory of evolution is also called

1. Theory of special creation

2. Inheritance of acquired characters

3. Survival of the fittest

4. None of these

Industrial melanism is an example of

(1) Neo Darwinism

(2) Natural selection

(3) Mutation

(4) Neo Lamarckism

Which is the most common mechanism of genetic variation in the population of a sexually reproducing organism?

(1) Transduction

(2) Chromosomal aberrations

(3) Genetic drift

(4) Recombination

What is common to whale, seal and shark?

(1) Seasonal migration

(2) Thick subcutaneous fat

(3) Convergent evolution

(4) Homeothermy

Artificial selection to obtain cows yielding high milk output represents

In Hardy- Weinberg equation, the frequency of heterozygous individual is represented by

(1) P²

(2) 2pq

(3) pq

(4) q²

Which of the following is the correct sequence of events in the origin of life?

I.    Formation of protobionts,

II.   Synthesis of organic monomers.

III.  Synthesis of organic polymers.

IV.   Formation of DNA-based genetic systems.

(1) I,II,III,IV

(2) I,III,II,IV

(3) II,III,I,IV

(4) II,III,IV,I 

Analogous structures are a result of
(1) Convergent evolution 

(2) shared ancestry

(3) stabilising selection 

(4) divergent evolution

Which of the following structures is homologous to the wing of a bird?

(1) Wing of a moth

(2) Hind limb of rabbit

(3) Flipper of whale

(4) Dorsal fin of a shark