Description: The article focuses on ancestrydna com activate. The author will show you a presentation for you to understand DNA testing for genealogy research, he will cover three most popular categories of DNA testing and explain how DNA test connects the families of Mrs. Obama and Mrs. Tribble.
My name is Dwayne Jackson, your host in this presentation, I’ll help you understand DNA testing for genealogy research, lately there have been a lot of discussions about DNA testing and genealogy research, you may recall that.
This method of research is often referred to as genetic genealogy in 2012 Rachel swarns of the New York Times wrote an article called meet your cousin the first lady a family story long-hidden, this article described a family connection between Michelle, Obama and Joann Tribble, a white lady and guitar bookkeeper from Atlanta Georgia.
The article explained the DNA connection between the white families of joy and trouble and the black families of Michelle Obama, but it didn’t explain how DNA was used to make this connection, this presentation is for new and veteran genealogists who want a better understanding of how to use DNA testing for their research.
In this presentation, I’ll cover the three most popular categories of DNA testing and I’ll explain how DNA testing connected the families of Mrs. Obama and Mrs. Tribble. So let’s get started. First, there are autosomal DNA tests that provide a breakdown of all the ethnic populations that make up your DNA.
Next, there are that test for the mitochondrial DNA, the important thing for you to know about mitochondrial DNA is that it’s the type of DNA used to check your mother’s direct female lineage.
The third and the last type of DNA test that we’ll discuss today is the type that checks for your Y DNA, this type of DNA is used to trace your father’s direct male lineage, now let me explain the difference between mitochondrial DNA and Y DNA.
Women only inherit and pass down mitochondrial DNA, men inherit both Y DNA and mitochondrial DNA, but men only passed down wide NH of their male children, for example, the mitochondrial DNA inside me came from my mother, my mother inherited a copy of this same mitochondrial DNA from her mother, my mother’s grandmother got her mitochondrial DNA from her mother.
I can keep going on like this, for my mother’s direct female lineage for hundreds and thousands of years, the way genetics work, I can’t pass down my mitochondrial DNA to my children, but I can pass down the Y DNA, that’s inside me to my son’s mitochondrial or Y DNA test results only provides information on one direct lineage autosomal DNA testing used for determining ethnic populations provides results from across all of your lineages.
For example, we all have 16 great-great grandparents, I have inherited unique DNA from all 16 of my great-great grandparents, so have you autosomal DNA tests provide results from all 16 lineages not to one lineage as seen with mitochondrial or Y DNA.
In the New York Times article, Mrs. Obama and Mrs. Tribble had a common ancestor named Henry welds shield, what DNA tests do you think was used to confirm their connection with Henry shields?
The answer is that those types used for Y DNA testing remember women inherit mitochondrial DNA only from their mothers and men inherit Y DNA only from their fathers, so why wasn’t the answer to the question mitochondrial DNA? Don’t let the fact that Mrs. Obama and Mrs. Triple R women confuse you.
Neither one of them have Y DNA their ancestor, Henry shields, however, is a man, he only passed down y DNA, so how was this connection made? The researchers had to have gotten a male relative of Mrs. Obama and Mr. Tribble to take the DNA test, so that’s how the DNA connection was made between the two families.
I hope this topic of conversation was interesting for you, as it was for me, this concludes my presentation, thank you for viewing and much success to your genealogy research.