What DNA Says About Human Ancestry—and Bigotry

I found this article interesting. The original source can be found here. Specifically:

Mitochondrial DNA indicates that all living humans descend from one maternal source—christened Mitochondrial Eve—who lived in Africa between 100,000 and 200,000 years ago. Similarly, the Y chromosome shows that all men have a common ancestor, Y-chromosome Adam, who lived at the same time. (Actually, both analyses indicate that modern humans descend from a small founding population of about 5000 men and an equal number of women.) The time estimates are based on assumptions on how frequently genetic mutations occur. The mutation clocks of mitochondrial DNA and the Y chromosome tick at different speeds, so the fact that they both indicate humans emerged at the same historical moment makes this evidence much more convincing…

Not only is our concept of race arbitrary, but it is based on a relatively insignificant difference between people. Skin pigment, eye shape, and hair type are all determined by genes. Indeed, as the human genome is mapped, geneticists might be able to reconstruct what mummies or other ancient people looked like. But the physical ”stereotypes” of race, writes Cavalli-Sforza, ”reflect superficial differences.” For example, light skin color is needed in northern climates for the sun’s ultra- violet light to penetrate into the body and transform vitamin D into a usable form. This mutation may well have arisen at different times, in different ancestral groups, on different points along the DNA. That’s true for cystic fibrosis, which occurs almost exclusively in people of European descent but is caused by several different mutations…

In other words, ”white people” do not share a common genetic heritage; instead, they come from different lineages that migrated from Africa and Asia. Such mixing is true for every race. ”All living humans go back to one common ancestor in Africa,” explains Paabo. ”But if you look at any history subsequent to that,” then every group is a blend of shallower pedigrees. So, he says, ”I might be closer in my DNA to an African than to another European in the street.” Genetics, he concludes, ”should be the last nail in the coffin for racism.” …

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21 Comments

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21 responses to “What DNA Says About Human Ancestry—and Bigotry

  1. thordaddy

    Lol… “Superficial differences.”

  2. thordaddy

    wS…

    Please do elaborate on HOW exactly “genetics” will put that “final nail” in the coffin of “racism?” Such a claim doesn’t even make sense.

    • What I find interesting is that you and the black man have the same line of fathers.

      • thordaddy

        wS…

        What’s so interesting about it? You’ve already conceded that pigmentation was superficial and so how is it the Adam and Eve were “black” and not “white” to start off with? Doesn’t one need the sun FIRST to turn that skin darker? Or, Adam and Eve were “black” and over time lost their pigmentation as they left the sun? Can you explain exactly how this happened 1-2 hundred thousand year ago? And why a 100 thousand year gap in Adam and Eve’s birth?

        The desire is “universal equality” and YOU WILL BE FED ANYTHING AND EVERYTHING to get you there.

      • Are you rejecting the scientific proof that all humans currently alive share a common ancestor?

      • thordaddy

        wS…

        Of course… Descent with modification is a farce with no actual “scientific proof.”

      • What about the genome data? You reject this I assume?

      • thordaddy

        wS…

        Not at all… Some places, “it” “says” “we” are the same and in some places “it” “says” “we” are different. Ergo, it’s a non-falsifiable… Er, one can make no certain predictions based upon the data… Um… No one can predict what the various genomes (either perceived unique or redundant) will “look like” OTHER than to say that “they” will “look” unique/different or same/equal.

        Of course, this secular origin story has no bearing whatsoever on one white male embracing genuine white Supremacy. None whatsoever.

        And in fact, you are a “Christian” denying Genesis. So you are a “Christian” denying the Origin of Christianity… Of the Universe, itself. How can you do this with ANY AUTHORITY?

      • Do you also deny climate change?

      • thordaddy

        wS…

        Do you mean to ask if I deny that the climate changes or are you asking me if man has, collectively, warmed up the planet enough to create an existential crisis?

      • thordaddy

        wS…

        Because I “see” a perpetuating self-annihilation as the operative paradigm and I recognize the fundamental assertion of the modern scientist then for those who believe in AGW the effects will manifest and for those who doubt, an equally effectual outcome.

      • thordaddy

        wS…

        And why did you say “climate change” and not AGW or “man-made global warming” or just “global warming?” How can you not “see” the absurdity of the question in the manner in which you must have purposely phrased it?

      • I figured you would have a problem with it no matter how I phrased it actually. So go ahead and answer the question.

      • thordaddy

        wS…

        I already did. And your mistake is conceptualizing “it” as though it were as absolute as The Perfect Man. If those they gave it most concern were not also for mass third world immigration into the West THEN I would be far less suspicious.

      • thordaddy

        Anthropomorphic (man-made) Global Warming…

      • Anthropomorphic does not mean man made. It means giving something human characteristics.

      • thordaddy

        wS…

        Yes… Global warming is of human character… I didn’t create the label. But it is FAR MORE truthful and convenient than “climate change.”

      • thordaddy

        Lol… Anthropogenic… Excuse me… As you can read, I have not given this fake existential crisis any thought in almost a decade.

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