There are two opposing views about origin of modern man. According to one view Homo erectus in Asia were the ancestors of modern man. A study of variation of $DNA $ however suggested African origin of modern man. What kind of observation on $DNA$ variation could suggest this
Greater variation in Asia than in Africa
Greater variation in Africa than in Asia
Similar variation in Africa and Asia
Varition only in Asia and no variation in Africa
Darwin in his 'Natural Selection Theory' did not believe in any role of which one of the following in organic evolution
A species inhabiting different geographical areas is known as
Replacement of original hard parts or even the soft tissues of the organisms by minerals is known as
Mutation introduces new genes into a species and brings about the changes in