| Which one of the following statements is correct? |
| i. The genetic constitution of an individual organism is called its phenotype. |
| ii. Mutation and genetic recombination are sources of variations. |
| iii. Darwin's theory of natural selection proposed that new species arise by the slow accumulation of advantageous variations over a period of time. |
| iv. Speciation takes place when geographically isolated populations have variations. |
| v. Life originated on the Earth about 7 billion years ago. |
A) i and ii
B) ii, iii and iv
C) i, iv and v
D) ii, iii and v
E) None of these
Correct Answer: B
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