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In our ancestral past we descended from animals that had hare all over them (like gorillas and chimpanzees). The hare we have on our bodies is a hang over from that evolutionary past.
At some time in our evolutionary development there must have been some advantage to our ancestors to lose the bulk of that hair (perhaps we swam in water allot or perhaps where we lived was very hot).
We think we know the process by which this happened, it is called 'neoteny' - (the retention, by adults in a species, of traits previously seen only in juveniles). Baby chimps and gorillas have very little hair and this must have been the same with our evolutionary ancestors. One day a baby was born who did not develop the adult hair and this conveyed some advantage which led to that ancestor having offspring that survived to pass this trait on down to us.
The hairs we have do provide some protection an warmth for us and the hair bases are sensitive to movement of the hairs allowing us to feel the wind and when insects land on us.
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∙ 15y ago
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How hairs grow less in under arms and under legs?
try getting your mom to help
Where does hair growth under the arms and on the legs generally begin?
You are covered with hair except for the palms of your hands and the soles of your feet. But at puberty, the hairs under your arms begins to get thicker. This is to trap the odor you will begin to make. Of course, being human, we have decided we don't like that smell, so we cover it up.The hairs on our arms and legs begin to get thicker and longer about the same time. Men will produce more belly and chest hair than women will.
Why do we have hairs on our legs?
so that we can shave them
What are cats legs called?
They're not whiskers, they're reinforced hairs similar to whiskers. Not only are the hairs located on their front legs, but also over their eyes.
Do squirrels have 4 legs or 2 arms and 2 legs?
2 arms and 2 legs
How many arms and legs do penguins have?
2 arms and 2 legs
What do you call the following parts of the body Legs and arms?
How about Legs and Arms.
Do giraffes have arms and legs?
Giraffes have four legs, but no arms.
How does a cyclops with no arms or legs look like?
A cyclops with no arms or legs
How many hairs do you got on your arms?
4.2
Why do I have no hairs on my legs?
cause you dont have a head
Do roborovski hamsters have hairs on their legs?
yes.
