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 variations of DNA however suggested African origin of Modern man. What kind of observation on DNA variation could suggest this ?

The observation on DNA variation that could suggest an African origin of modern man is the presence of greater genetic variation in Africa compared to other parts of the world, such as Asia. This is because if modern humans originated in Africa and then migrated to other parts of the world, the African population would have had more time to accumulate genetic variations. In contrast, populations that migrated out of Africa would have undergone a bottleneck effect, reducing their genetic diversity. Therefore, the correct answer is option (A) Greater variation in Africa than in Asia. Think of it this way: the amount of genetic variation within a population is a reflection of its age and history, with older populations generally having more variation.