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I don't understand this unless we are talking about adoptees who don't know their families. If both your parents are white it is impossible to be 48% black.
I never said otherwise. We're talking about people of mixed race.
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On the commercial the lady discovers she is "26% native American" again that is only possible if one of your grandparents is 100% full blooded Native American.
Incorrect. Hispanics often have high levels of Native American DNA without one of their grandparents being full blooded. It's because they have many Native American ancestors from further back.
For example - let's say the person has 8 full blooded Native American 3rd great grandparents (out of 32)... that adds up to 25% or 26%. This is very common among people in Latin America. The average isn't always as high as 26%, it depends on the country - but for example, Mexicans are on average as much as 45-50% Native American. That doesn't mean most of them have one full blooded Native American parent, it could mean about 32 of their 64 4th great grandparents were full blooded Native American. I'm simplifying it a little bit, as the last full blooded ancestors may have been from different generations - but hopefully you get the point.
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If you know where you parents are grandparents are from, those other mixed bits are tiny percentages, not 35% this and 24% that
But we're not talking about tiny bits... the post of mine that you quoted is talking about people of mixed race, with significant percentages in more than one race. I'm not sure why that concept is difficult for you to grasp, but that's what we're talking about.
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My parents and grandparents are from Germany and Russia. If a DNA test shows me as 24% Asian, or 19% African, it is simply not true, it is not mathematically possible.
No one has said otherwise, so I'm not sure why you're fixated on this.
I never said otherwise. We're talking about people of mixed race.
Incorrect. Hispanics often have high levels of Native American DNA without one of their grandparents being full blooded. It's because they have many Native American ancestors from further back.
For example - let's say the person has 8 full blooded Native American 3rd great grandparents (out of 32)... that adds up to 25% or 26%. This is very common among people in Latin America. The average isn't always as high as 26%, it depends on the country - but for example, Mexicans are on average as much as 45-50% Native American. That doesn't mean most of them have one full blooded Native American parent, it could mean about 32 of their 64 4th great grandparents were full blooded Native American. I'm simplifying it a little bit, as the last full blooded ancestors may have been from different generations - but hopefully you get the point.
But we're not talking about tiny bits... the post of mine that you quoted is talking about people of mixed race, with significant percentages in more than one race. I'm not sure why that concept is difficult for you to grasp, but that's what we're talking about.
No one has said otherwise, so I'm not sure why you're fixated on this.
I'm sorry but you need to review math and how percentage works. It is physically and mathematically impossible to be 1/4 anything without 1 grandparent being full blooded. Lots of people with lesser percentages cannot be added to make a person 25% of any nationality.
It bothers me because I feel like these companies are taking advantage of people.
I'm sorry but you need to review math and how percentage works. It is physically and mathematically impossible to be 1/4 anything without 1 grandparent being full blooded. Lots of people with lesser percentages cannot be added to make a person 25% of any nationality.
That's not correct. I thought I had explained it adequately but if not please research this on your own.
I'm sorry but you need to review math and how percentage works. It is physically and mathematically impossible to be 1/4 anything without 1 grandparent being full blooded. Lots of people with lesser percentages cannot be added to make a person 25% of any nationality.
It bothers me because I feel like these companies are taking advantage of people.
Let's say one grandparent is 3/4 German, two others are 1/8 German, and the fourth has no German ancestry. The grandchild would be 25% German.
Or even easier, two grandparents are each half German, and the other two grandparents have no German ancestry. The child is 25% German.
.5 x .25 + .5 x .25 + 0 x .25 + 0 x .25 = .25
Last edited by chicagobear; 08-25-2017 at 12:47 PM..
I'm sorry but you need to review math and how percentage works. It is physically and mathematically impossible to be 1/4 anything without 1 grandparent being full blooded. Lots of people with lesser percentages cannot be added to make a person 25% of any nationality.
It bothers me because I feel like these companies are taking advantage of people.
The discussion is not about nationality. Your nationality is determined by your citizenship in a particular country.
If you are a citizen of Mexico you are 100% Mexican.
Citizens of Mexico will have varying percentages of DNA from different ethnicities, commonly European, African, and Amerindian.
Those percentages you are concerned about are not based on the number of ancestors you have but the amount of DNA that has been shown to come from comparison groups of people of known ethnicity. Amerindian can be problematic because the comparison group is limited. Someone can have Native American ancestors but DNA testing will not pick it up because there is no one in the comparison group who has known ancestry from the same tribe.
Several people have explained to you how the math works. The percentages do not require a recent full blooded ancestor of any ethnicity.
I had never heard nor did it cross my mind that anybody was partially white before the advent of genetic testing (the last 15 years maybe). Black Americans don't traditionally see themselves as being at all related to white people. People would sooner say that they were part "indian" if anything else other than black.
I didn't even notice unless it was somebody who was decidedly white-looking.
I had never heard nor did it cross my mind that anybody was partially white before the advent of genetic testing (the last 15 years maybe). Black Americans don't traditionally see themselves as being at all related to white people. People would sooner say that they were part "indian" if anything else other than black.
I didn't even notice unless it was somebody who was decidedly white-looking.
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