Question

Serological tests to trace evolution was given by

• A. Simpson
• B. Wallace
• C. Nuttall
• D. Lemaitre

Answer 1

The correct option is C Nuttall

Nuttal performed antigen-antibody test /blood precipitation test / serological test to establish inter relationship among different animal groups. The test is based on the fact that injection of mismatched / foreign blood initiates antibody production. Injection of human blood into rabbit initiates antibody production; this antihuman serum from rabbit is poured into different organisms. The closer is the organism to human, the more the precipitate formation with antihuman serum. Thus, anthropoid apes produce large amount of precipitate with anti human serum as compared to monkey and dog. This makes option C correct.

Wallace supported evidences of evolution from geographical distribution. He divided earth surface into six biogeographical realms on the basis of distribution of terrestrial and freshwater vertebrates. Option B is incorrect.

Simpson proposed evolutionary species concept and followed morphological adaptations to establish evolutionary trends and classification of mammals but failed define position of Cetaceans (whales and porpoises) due to their complete adaptations to aquatic life. Option A is incorrect.

Lemaitre proposed the “big bang theory” of origin of universe. According to this theory, explosion of cosmic material threw hydrogen atoms and related nuclei in space which in turn condensed to formed nebulae, the pieces of cosmic material. Spinning separated each nebula into many galaxies each of which holds together many stars by their mutual gravitational force. Option D is incorrect.

Therefore, the correct answer is option C.