' Homo-Sapiens' have originated from a common ancestor and yet they show tremendous variation in size, colour,and appearance.Explain.

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Solution

Homo sapiens have arisen from a common ancestor but they are widespread geographically. They have evolved as different races at varied places exposed to different climatic conditions and environment making them highly variable. But still they are not reproductively isolated and hence belong to a common species.

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Q. The diagram shows how Homo sapiens (modern people) could have evolved from their ancestors.

\begin{matrix} H o m o s a p i e n (m o d e r n p o p l e) ↑ H o m o n e a n d e r t h a l e n s i s ↑ H o m o e r e c t u s ↑ H o m o h a b i l i s (v e r y e a r l y p e o p l e) \end{matrix}

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