the human beings look so different from each other in terms of colour ,size and looks are said to belongs to same species .why?justify your answer
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Answered by
358
Its due to evolution or varations in genes. It is also due to sexual reproduction in which half characteristics of mother and half of father we get due to which we look quite different from them and others
Answered by
160
1. Human evolution has been studied by using the various tools of tracing evolutionary relationships like excavating,carbon-dating,studying fossils and determining DNA sequences.
2. The human races were even identified on the basis of their skin colour and named as qhit,black,yellow,brown. It is known that the so called human races have not evolved differently.
3. In fact,there is no biological basis for dividing human beings into different races. All human beings are single species.
4. It has now been established by research that the earliest members of human species came from africa.
5. About hundred thousand years ago,some of our ancestors left Africa while others stayed back. Those who left africa slowly spread across the whole earth.
Darwin's theory of evolution tells us how organisms develop from simple to more complex forms.According to this theory,we can say that All the human beings who are living now have evolved from the humans who have earlier lived in africa
2. The human races were even identified on the basis of their skin colour and named as qhit,black,yellow,brown. It is known that the so called human races have not evolved differently.
3. In fact,there is no biological basis for dividing human beings into different races. All human beings are single species.
4. It has now been established by research that the earliest members of human species came from africa.
5. About hundred thousand years ago,some of our ancestors left Africa while others stayed back. Those who left africa slowly spread across the whole earth.
Darwin's theory of evolution tells us how organisms develop from simple to more complex forms.According to this theory,we can say that All the human beings who are living now have evolved from the humans who have earlier lived in africa
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