1. Antibodies are specialized serum glycoproteins that are produced by lymph in response to an antigen and react specifically with that antigen. They are formed against antigen.
Whereas interferons are antiviral proteins, formed by infected and dying cells against the viral infection.
2. Antibodies are slow acting, long lasting and act outside the cells.
Whereas interferons act quickly but temporarily and inside the cells.
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.