Why does it seem that about 85% of the human population has black hair and black (or dark) eyes?

Start with Africa: the native blacks have black hair and eyes, as do the Arabs of Libya, Egypt, and such.

Move over to South America: brown skin but black hair and black eyes.

Next Austraila: do not the aborigines in Aus. have black hair and black eyes?

Still moving west around the Southern Hemisphere is India; black hair and eyes.

Pakistan, Iran, Middle East, Israel.Southern Europe (Italy, Spain): black hair, black eyes.

Mexico, American Indians, Eskimos: same trait.

China, Japan, Siberia.

The only people without this consistent trait seem to come from Northern Europe: Germany, England, Russia,France, Belgium,Sweden. From there you see all the other colors: blonde, brown, and red.

The black hair and black eyes trait seems to have nothing to do with skin color. You see it in black, white, brown, and yellow skin people.

But the only people that are not exclusively black hair and black eyes come.from Northern Europe.

Americans come from everywhere and dont count.

Why?

Why does it seem that about 85% of the human population has black hair and black (or dark) eyes?

I think it has to do with soaking in as much vitamin d as you can. Northern Europeans have been a long time,centuries, in a northern climate, they have lighter skin and hair to absorb more sun when they can get it. Most other ethnicities stayed closer to the equator for longer, where there is more consistant sunlight and their darker skin and hair and eyes help to cut out some of the ultraviolet rays. I watched a documentary on the migration of mankind, we seemed to have started in southern africa and migrated north, of coarse not everyone kept moving, some stayed when they found a place they liked. I believe some of the first to stay put when they hit an ocean were the europeans, others went east, then north and became what are now the Chinese and peoples of native north america, via the land bridge that connected asia and north america, from there they were supposed to have travelled down the continents of north and south america. They actually DNA tested people in asia and russia area to find connections, it was a cool documentary, I wish I could remember the name, probably on the discovery channel?

Why does it seem that about 85% of the human population has black hair and black (or dark) eyes?

They are dominant genes. The lighter colors of both hair and eyes are mutations that have become recessive genes.

Why does it seem that about 85% of the human population has black hair and black (or dark) eyes?

i think it is all about how God created human being.... or probably we came from one common origin.... that is from the middle of the earth or we call it the "equator" ... i think thats my answer....

Why does it seem that about 85% of the human population has black hair and black (or dark) eyes?

i'm not sure. it's kinda funny that you were actually able to come up with a question like that. i hope that doesn't frusterate you. by the way...you don't have dark hair and brown eyes...do you?

Why does it seem that about 85% of the human population has black hair and black (or dark) eyes?

Genetically, dark skin and eyes are autosomal dominant traits . However, two dark haired, dark eyed and dark skinned parents can both contribute a recessive gene resulting in a child that has a light hair color, light eyes and light skin.

Why does it seem that about 85% of the human population has black hair and black (or dark) eyes?

Well pretty much all the features you inherit come down to which one is the dominant gene everything from your eye color to your hair growth pattern.

For example my mother is fair skinned with freckles, green eyes and strawberry blond hair.

My father has darker features Brown hair, brown eyes and a more tan completion.

I have brown hair, eyes and a light complexion. My sister has dark blond hair, brown eyes and a tan complexion. My brother has Blond hair, green eyes and a tan complexion.

So really it all just depends on which genes were dominant during conception. Remember you pretty much have a 50/50 chance of inheriting traits.

There are also things called recessive genes. For example: you and your wife are both brown haired, brown eyed and dark complected but one or both of your wife's/or your own parents (or sometimes grand parents) have blond hair and blue eyes and a light complexion that means potentially your children could inherit these genes.

Why does it seem that about 85% of the human population has black hair and black (or dark) eyes?

Its the dominant gene. We are all made from dirt. Color hair comes from dirt colors. white and Yellow hair sand. Red hair red clay. Brown and black the dirt. Black is just a dominant color. Black takes over any color