The concept of chemical evolution is based on:

1.	crystallization of chemicals
2.	interaction of water, air, and clay under intense heat
3.	effect of solar radiation on chemicals
4.	possible origin of life by a combination of chemicals under suitable environmental conditions

Industrial melanism as observed in peppered moths proves that:

Select the correct statement from the following:

The finches of the Galapagos islands provide evidence in favour of:

1. special creation

2. evolution due to mutation

3. retrogressive evolution

4. biogeographical evolution

Adaptive radiation refers to:

When two species of different genealogy come to resemble each other as a result of adaptation, the phenomenon is termed:
1. divergent evolution
2. microevolution
3. co-evolution
4. convergent evolution

An important evidence in favour of organic evolution is the occurrence of:

1. homologous and vestigial organs

2. analogous and vestigial organs

3. homologous organ only

4. analogous organ only

Variations caused by mutation, as proposed by Hugo de Vries, are:
1. small and directionless
2. random and directional
3. random and directionless
4. small and directional

A gene locus has two alleles A, a. If the frequency of dominant allele A is 0.4, then what will be the frequency of homozygous dominant, heterozygous and homozygous recessive individuals in the population?