Inspite of great disadvantageous nature of sickle cell anemia it has a high frequency in some parts of Africa. It is because of the reason that

Options :
  1. sickle cell anemic is resistant to malaria
  2. in South Africa oxygen concentration is very high
  3. it is a case of genetic drift
  4. all the above

Answer and Explanation :-

Answer: Option 1


Sorry there is no explanation for this answer. Please help others by posting your response below

How do you rate this queston?  Very Easy  Easy  Average  Above Average  Tough

Previous Question : According to Neo-Darwinism variations which are the raw material of evolution occur

Next Question : Survival of fittest was used by

Click here for free online test on Evolution and Zoogeography


 (Getemail alerts when others member replies)

Life is a paradise for those who love many things with a passion.
-Leo Buscaglia