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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?

1. Greater variation in Asia than in Africa
2. Greater variation in Africa than in Asia
3. Similar variation in Africa and Asia
4. Variation only in Asia and no variation in Africa

Correct answer: Greater variation in Africa than in Asia

Solution

If modern humans originated in Africa, African populations would have had more time to accumulate mutations and preserve ancestral diversity. That would make DNA variation greater in Africa than in Asia.

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