The sum total of all the alleles in a population constitute the

(1) chromosome complement

(2) karyotype

(3) gene pool

(4) allele group

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

(a) Darwin's Finches of Galapagos islands

(b) Herbicide-resistant weeds

(c) Drug-resistant eukaryotes

(d) Man-created breeds of domesticated animals like dogs

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

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

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

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

Flippers of Penguins and Dolphins are examples of:

Good examples of recapitulation theory is

(1) The embryonic membrane of reptiles

(2) Tadpole larva of frog

(3) Placenta of mammals

(4) Canine teeth of the dog

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

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

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

1. Adaptive Radiation

2. Divergent Evolution

3. Cyclical Evolution

4. Convergent Evolution

Embryological support for evolution was proposed by:

After about how many years of the formation of the earth, life appeared on this planet?

1. 500 billion years

2. 50 million years

3. 500 million years

4. 50 billion years