Renouncing Judaism

[Ferrocyanide]

Bar people suffering from albinism, everyone is brown.

Boru

I guess so.
It would have to be that way since the system that produces melanin is important. Melanin is not a single compound.
I guess there is something that effects the production rate.
Also, it seems that red haired people have less production.

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That doesn't make any sense. We can visually tell what race a person is. Even police forensic uses skull shapes to tell from which race a person is. Therefore, there should be some genetic information behind those features.

Genetic information tells us about the local breeding pop.  You can't actually tell what race a person is by looking at them, less so if you want "race" to have anything to do with genetics.  A white man from north africa has more in common with a black man in north africa than a black man in north africa has with a black man in north america...and the white man in north america has more in common with the black man in north america than the white man in north africa.   This... even though we've tried to segregate the breeding populations for generations.  You might be amused at some of the things 23andme turned up in the us with regards to race, and perceptions of race.  Not just other peoples, but our own.  

That's the reality of genetics, regardless of what the police do - a poor indicator of race realism if ever there were one.   

I get the impression that there is some politics at play here when I hear on various science shows that there is no such things as race, from a biological perspective.

I don't know. Maybe what they are doing is sequencing the entire human genome and comparing that and you get the results that you mentioned.
I think what they need to do is determine what counts as racial features. I'm guessing, this is skin color related, skull shape related, hair thickness, hair density on the head.
Next, they need to figure out the genes that only effects those features.

What's wrong with police forensics? Skull shape is used to determine whether a person is asian, caucasian, african(black).
For sure, there must be some genes that control those features.

My dentists told me that it is easier to drill the teeth of asian. They tend to be softer
African(black) is the hardest.
For caucasians, it is somewhere in the middle.
If that is true, again, there should be genes behind those features.

Yeh, unless they're reproductively isolated, then they'd be subspecies.  No group of humans beings is reproductively isolated from any other.  In fact, we're one of the most well mixed animals on the planet.  Groups of chimpanzees living together are more genetically diverse than human beings living on different continents from each other.  Wild, huh?

But intermarriage is something that is more recent.
For the past 5000 y, it was a rare thing, I think.
The king and queens would intermarry. In the case of ancient Egypt, apparently, they would not mix. They would marry brother and sister.

In the example that you gave, you mentioned the people of North America. The people who describe themselves as black aren't fully black. They all seem to be mixed (African(black) + caucasian).
There seems to be a wide spectrum. For example, Eddy Murphy looks quite a bit black, but probably has some white genes.
Oprah isn't as black as him. Will Smith isn't as black as him.

I think they describe themselves as black for political reasons (The whites do not like the slightest bit of blackness skin color).
Even some of the white people have a certain amount of black heritage and even native american heritage.

The reason for the chimpanzee thing might be that they didn't suffer from genetic contraction.
For humans, it is thought that the population crumbled at some point to under 10,000 members.