Question

Arrange the following in sequence of their occurrence:
(i) Mutation
(ii) Reproductive isolation
(iii) Natural selection
(iv) Evolution

• A. Mutation $\to$ Reproductive isolation $\to$ Natural selection $\to$ Evolution
• B. Evolution $\to$Natural selection$\to$ Reproductive isolation $\to$Mutation
• C. Mutation$\to$ Natural selection $\to$Reproductive isolation $\to$ Evolution
• D. Natural selection$\to$Reproductive isolation$\to$Mutation$\to$ Evolution

Answer 1

The correct option is A Mutation $\to$ Reproductive isolation $\to$ Natural selection $\to$ Evolution

The correct sequence is:
Mutation $\to$ Reproductive isolation $\to$ Natural selection $\to$ Evolution
A mutation is the permanent alteration of the nucleotide sequence of the genome of an organism which leads to formation of new species. The species with a difference in its genotype may not be able to interbreed with the original species, leading to reproductive isolation. Usually, mutations and variations occur in order to have a better adaptation to the environment and the organisms which are unable to adapt will not survive which indicates natural selection. This then leads to evolution.