Archive for the ‘DNA Genealogy’ Category

Testing Your Maternal Family History Using the Most Popular Dna Test

Thursday, May 14th, 2009

For genealogy researchers, having traced ancestors on your mother’s side, you may have a solid paper trail up to a certain point. But what do you do if the paper trail has gone cold and your family history research has come to a stop. What do you do then? How can you progress your genealogy beyond that?

DNA testing is one way to keep your genealogy research progressing forward on your maternal side. DNA testing gets more popular every year, yet many still don’t understand some of the basics of how it works. The value of any DNA test is that it can show connections where there is a missing paper trail or the trail ends. If you have a good paper trail as far back as you desire you probably don’t need DNA testing, but once the trail ends it may help you make solid connections that would not have been noticed otherwise.

At first DNA testing was used as a tool mostly for male researchers. Initially only the male Y-Chromosome test proved of any value in connecting lines, but this was only on a father’s line. Eventually a popular genealogy DNA test that females could take was perfected. Females were no longer completely left out of genealogy DNA testing. In this article we will examine a DNA test, which females can take, that might by valuable for family history research.

What is the DNA Test Females Can Take?

The most popular maternity test for genealogist is the Mitochondrial DNA test, otherwise known as the mtDNA test. This test traces DNA that is passed only through the mother’s side, from female to female. It cannot be used to track the male lines on your mother’s side. The distinctiveness of this test is that either a male or female can take it. Both sexes inherit this type of DNA through their maternal lines. Yet, only females pass it down.

As in any DNA test, if a match is found between two females, or males, who take this form of genealogy test, then those two people are indeed related on the maternal side, somewhere in history. The dilemma is figuring out exactly where on your family lines you have a common ancestor. In DNA terms we call that the Most Recent Common Ancestor or MRCA. The biggest goal of DNA testing is to get as close as possible to the MRCA for a group of people, or at least the person you want to compare with.

Mitochondrial DNA changes very slowly over time, if at all, so if you don’t exactly match another mtDNA donor it most likely means your common maternal ancestor is very far in the past. This is different than the male only Y-Chromosome test where changes can occur much more recently or quicker, in relation to time itself.

DNA Testing Benefits for Genealogy Research on the Maternal Side

dna testingThe benefit of the mtDNA test is it will tell you how far in the past, within a range, you share a common ancestor with someone else. The results may give you some idea how your family members migrated and what groups you are related to. From there you will need to find paper trails connecting each other, but you will at least have some idea where to start or where a commonality exists.

The more sets of mtDNA results you have from many participants the easier it will be to understand what the matches mean and how you may connect genealogically on your maternal side. This makes it important to get a large group of people to test mtDNA, so that you have more results to compare. Gradually matches will be found and surprises uncovered, all which will give you more clues as to your maternal ancestry. That is why this test remains popular for female and male genealogist alike.

Dr Geoff Swinfield will be lecturing on DNA and family history as part of the "Ask the Experts"  workshops run by the Society of Genealogists at the forthcoming Family History Conference in Nottingham. He has a Ph.D. in genetics and has used this training to apply genealogical research to the study of families at risk from genetic diseases. Why  not come along and have a great four day conference

Article Source: http://www.articlesbase.com/genealogy-articles/testing-your-maternal-family-history-using-the-most-popular-dna-test-740947.html

Author: Mark Jordan

About the Author:

Mark D. Jordan is a writer and genealogy researcher from Pennsylvania. A recommended genealogy website is Researching Your Family History. More family research information can be read at Family History Blog

Technorati Tags: , , , ,

DNA Markers for Genealogy

Friday, May 8th, 2009

DNA Markers for Genealogy – Mitochondrial DNA Genealogy

Who else wants to know about DNA markers for genealogy? Here is a simple scientific test to trace your ancestors. Did you know that DNA From One Generation To The Other Is Almost Conclusive Evidence. This breakthrough in genealogy research has been making headlines for the past several years with some astounding proof of kinship between some very prominent historical figures.

dna genealogyDNA testing for family tree is not only convenient, but also simple. You find a genealogy testing company either in the phone book of on the Internet. Next, make an appointment and go to the company on your assigned day, fill out the forms, pay the fee and your good to go. The DNA genealogy test starts with a mouth swab of your mouth near the cheek. Many companies give you a kit so you can do the mouth swab at home and mail in the results to the laboratory. After the laboratory tests the DNA, the results are sent back to testee.

Wide DNA Databases Compare

The company doing the genealogy DNA testing will obviously need to have access to DNA databases which they will use to make comparisons and once these comparisons show their results, the company will then send you the results regarding whom your DNA swab matched with. You should realize that each and every cell is sure to have your DNA and whether it is your sperm or egg cells or even the sex cells, you will be providing your own unique DNA for further matching.

Parents Pinpointed

dna genealogyListen closely. Genealogy DNA testing is helpful in pinpointing an individual’s parentage and it can be used extensively when you need to know who the mother is, and also in case of adoptions. Thus, it is easy to see how genealogy DNA testing can help with creating your family tree because your DNA will have been passed from one generation to the next and the information pertaining to your ancestors will be encoded therein.

The Egg The Sperm

When your sperm and also egg cell combine together, a new cell is created that will hold DNA from either parent and when genealogy DNA testing is performed in specialist laboratories, they will help provide evidence whether you are related to another person with a matching DNA. What’s more, the chances of two persons having identical DNA are very small with the exception of identical twins which are due to the fact that their DNA is identical because the fertilized egg had split and formed two fetuses obtained from a single sperm and also from the same egg.

dna testingCutting Edge Medical Science Genealogy DNA Testing

Just imagine, as DNA is passed from generation to generation there is very little change in its structure. This is amazing and is the primary reason to use DNA markers for genealogy testing to explore your ancestry. In no time at all, the link between families can be nailed down and makes the construction of a family tree that much more reliable and accurate. And new advances are being made in medical science to enhance and improve the DNA testing for family tree.

Dr Geoff Swinfield will be lecturing on DNA and family history as part of the "Ask the Experts"  workshops run by the Society of Genealogists at the forthcoming Family History Conference in Nottingham. He has a Ph.D. in genetics and has used this training to apply genealogical research to the study of families at risk from genetic diseases.

Article Source: http://www.articlesbase.com/home-and-family-articles/dna-markers-for-genealogy-345644.html

Author: Jean Eagloy

About the Author:

Jean Eagloy is the developer of Genealogy Hookups, visit for more data .

Technorati Tags: , , , , , ,

The Success of Genealogy Research Lies on DNA Testings

Wednesday, December 10th, 2008

There are about 60,000 billion cells found in the human body. It includes muscle cells, cheek cells, and white blood cells. Each cell contains the whole genetic information which is the DNA (deoxyribonucleic acid). The nucleus inside the cell holds the DNA or chromosomal DNA that consists of Y chromosomal DNA, X chromosomal DNA, and autosomal DNA. The external part of the nucleus holds mitochondrial DNA (mtDNA). The autosomal DNA comes from both the mother and the father, Y chromosomes is inherited by a son from his father, and mtDNA comes from the mother only.

dna genealogy
There are advancements made in testing DNA to meet various areas of interests. For example, the most common uses of DNA are related to finding criminals and proving paternity. But today, genealogy research also uses DNA testing.

For so many years, genealogy has become an important element of the society and a favorite hobby of some enthusiasts. Although this is more rewarding, somehow it brings frustrations even to expert genealogists. It can be very time consuming when doing paper research. More often, it can lead to illegible and damaged documents. But, DNA testing provides quick results without questioning its authenticity or quality. Moreover, the genetic genealogy results can endure the tests of time.

genealogical dna testing

1.    Mitochondrial testing is utilized for tracing the maternal heritage of a person. The mtDNA testing is very important since genealogists are mostly females. When they marry, maternal lines are often lost because of changing their surnames. In this manner, they can learn and trace their maternal ancestry.

There are advances made in understanding genetics and using laboratory techniques in helping a person to identify maternal lineage through mtDNA tracing services. The distinct mtDNA of person is analyzed and compared to the databases of other samples of mtDNA worldwide, revealing information about the lost ancestry.  

The mtDNA remains nearly unchanged even for so many years. You can share the same type of mtDNA with your mother, maternal grandmother, and maternal great grandmother. The same exact mtDNA code can track your direct maternal lineage way back from the time where mtDNA code’s natural mutation occurred.

Women who are living today can trace their origins 150 thousands years ago through natural mutations or mitochondrial eve.  In connection with matrilineal descent, eve is the common ancestor. But it doesn’t necessarily imply that eve is the only woman who lived in that era. There were also other women alive but only the lineage of eve has survived.

2.    Y chromosomal DNA testing is the most common used form of genetic genealogy testing. Some people can even trace if a deceased man is related to them by conducting this test.

Like mtDNA, Y chromosomes can be also traced back from one prehistoric father, Adam. The DNA mutation of the first Y chromosomes naturally occurs over many generations. Determining the present Y chromosomes can trace your paternal lineage through searching the Y database worldwide.

genealogical dna test

Moreover, genealogists can find out if two people are related because they have similar surnames through Y chromosomes testing. It is not impossible since in most cultures, surnames or family names are inherited by children from their fathers like the Y chromosomal DNA.

A successful genealogy research lies on DNA testing because its usefulness is proven as time has passed by.

There will be experts on DNA genealogy in attendance at the "Open the Door and Here are the People" 2009 international Family History Conference"

 

Technorati Tags: ,