Q. There are two opposing views about the origin of modern man. According to one view, Homo erectus in Asia was the ancestor of modem man. A study of variations of DNA, however, suggested African origin of modern man. What kind of observation on DNA variations could suggest this ?
(a) Greater variation in Asia than in Africa
(b) Similar variation in Africa and Asia
(c) Variation only in Asia and no variation in Africa
(d) Greater variation in Africa than in Asia
Solution :
Correct option : A The origin of human races is a much-debated point among scientists studying human evolution. Many scientists argued that different race evolved from Homo erectus independently and that each adapted to a different place-Orientals in Asia, Caucasians in Europe, Aborigines in Australia and so on .Recently Scientists studying mitochondrial DNA from living human all over the world have argued that their research shows that all human races originated from one Homo sapiens ancestor in Africa . So, there are greater variations in Asia than in Africa.
