Who was the originator of the theory of Natural Selection ? Explain the evolution of species by this theory.
Write the causative agent and the most important symptom of each of the following diseases :
(i) Whooping cough
(ii) Tuberculosis
(iii) Measles
(iv) Malaria
Differentiate between :
(i) Spontaneous and Induced Mutation.
(ii) Geographical and Reproductive Isolation.