The general consensus in the evolution of humankind is that homo-erectus species were originally from the land of Africa

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Question 4

The general consensus in the evolution of humankind is that homo-erectus species were originally

from the land of Africa. It was from there that they grew and reproduced and then slowly

migrated out of Africa, to other parts of the world like Asia and Europe. There they formed their

local populations of homo-erectus and lived. However, when it comes to the evolution of homo-

sapiens or modern humans from the homo-erectus species of the world at that time, it is very

much debated among paleoanthropologists how it really happened.

Two hypothesis or theories of modern human evolution models came out of the various groups of

debate and argument. The first is called the multi-regional or regional continuity model. This

model holds that the separate and local populations of homo-erectus in different regions all

evolved into modern humans at around the same time thus giving rise to the variations of humans

in different regions. The second model is the out of Africa or replacement model. This holds that

modern humans originated and came from Africa. Through the evolution of homo-erectus to

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homo-sapiens in Africa, the modern humans migrated out to all other parts of the world with

some leaving behind to live. These modern human populations took over the regions that they

migrated to from the local populations of homo-erectus which were more or less extinct by that

time.

Of the two evolution models above, there are reasons probably to favor the replacement model

over the multi-regional model. Why the replacement model? Firstly, one reason would be that the

earliest bones and fossils of modern humans were found ...

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