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Question of the Week / Re: QotW - 16.01.26 - Why do humans have such a variety of appearances?
« on: 01/03/2016 01:17:43 »
To answer the original question, many factors must be considered.
Individuals look different because their genes are different, but why are they different? And why so much variety in differences?
Genes, in general, differ from one another due to differences in how they evolved, plenty have evolved different ways because humans come from almost every part of the world, and the environment of a place is what determines which traits animals will evolve to have. We see this (appearance wise) on a major scale when we look at the different races.
But you asked why people within the same race can look so different from each other
The answer comes down to not only the different genes that people within the same race have due to ancestral roots, random mutations, etc. but also to the differences in nutrition that people get, past illnesses, how fit they are, and things like that.
A final thing to add is the fact that almost all humans are a mix of quite a few races and lineages, giving them a mix of those appearance genes at birth.
Individuals look different because their genes are different, but why are they different? And why so much variety in differences?
Genes, in general, differ from one another due to differences in how they evolved, plenty have evolved different ways because humans come from almost every part of the world, and the environment of a place is what determines which traits animals will evolve to have. We see this (appearance wise) on a major scale when we look at the different races.
But you asked why people within the same race can look so different from each other
The answer comes down to not only the different genes that people within the same race have due to ancestral roots, random mutations, etc. but also to the differences in nutrition that people get, past illnesses, how fit they are, and things like that.
A final thing to add is the fact that almost all humans are a mix of quite a few races and lineages, giving them a mix of those appearance genes at birth.