Question 1
Why are human beings who look so different from each other in terms of size, colour and looks said to belong to the same species?
Although human beings vary widely in size, colour, and looks, the genetic makeup of human beings is similar. Variations in size,colour and looks are a result of the different levels of expression of the different traits. However, at the genetic level, humans have the same organization. Hence, they all belong to the same species.