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?

In a species, the weight of a newborn ranges from 2 to 5 kg. 97% of the newborns with an average weight between 3 to 3.3 kg survive whereas 99% of the infants born with weights from 2 to 2.5 kg or 4.5 kg to 5 kg die. Which type of selection process is taking place?
1. Cyclical selection
2. Directional selection
3. Stabilizing selection
4. Disruptive selection

Match the hominids with their correct brain size:

Select the correct option.

In Australia, marsupials and placental mammals have evolved to share many similar characteristics. This type of evolution may be referred to as:

A population of a species invades a new area. Which of the following condition will lead to adaptive radiation?

Which of the following statements is correct about the origin and evolution of men?

Which of the following refers to correct example(s) of organisms that have evolved due to changes in environment brought about by anthropogenic action?

1. (a) and (c)

2. (b), (c) and (d)

3. only (d) 

4. only (a) 

From his experiments, S.L. Miller produced amino acids by mixing which of the following in a closed flask:

1. ${\mathrm{CH}}_3,$ ${\mathrm{H}}_2,$ ${\mathrm{NH}}_4$ and water vapour at $800°\mathrm{C}$

2. ${\mathrm{CH}}_4,$ ${\mathrm{H}}_2,$ ${\mathrm{NH}}_3$ and water vapour at $600°\mathrm{C}$

3. ${\mathrm{CH}}_3,$ ${\mathrm{H}}_2,$ ${\mathrm{NH}}_3$ and water vapour at $600°\mathrm{C}$

4. ${\mathrm{CH}}_4,$ ${\mathrm{H}}_2,$ ${\mathrm{NH}}_3$ and water vapour at $800°\mathrm{C}$

Flippers of Penguins and Dolphins are examples of: