Ancestry by DNA Explained

Your ancestry by DNA is available with a few hundred dollars, four weeks and a simple cheek swab.  Finding ancestors via a genetic highway to the past is the most exciting breakthrough in the field of genetic research in decades.

The process begins with a kit from a laboratory that tests DNA and establishes a database for comparison.  The kit includes a plastic scraper which painlessly scrapes off loose cells in the lining of the check called buccal cells.  These cells contain the building blocks of life called DNA.

It only takes a few seconds and does not break the skin or cause any pain.  You place the sample into the tube that is provided in your kit and you send it to the pre-addressed envelope.

When the lab brings in the sample, workers will separate your cells from the plastic swab by use of unique buffers to suspend the cells in a sterile liquid.  In a series of washes the cells are purified and isolated further through a high speed spinning process called centrifugation.    This step occurs several times to create a pure DNA sample, separate from all other matter in the liquid transport.

The next step in the process is called “lysis” in which cells are heated to such a degree that the cell membrane breaks open.  Once the cell is breached the DNA leaches into the solution.  This is when the matching with other individuals occurs.

In a process called PCR, or polymerase chain reaction, DNA strands get separated, are combined with primers specific to each Y-chromosome and are annealed or stuck to the DNA strands.  Over the course of several repetitions, another chemical process takes place that amplifies Y-chromosome markers of interest to the researchers.

From here scientists can unlock the mysteries of ancestry by DNA and “unite” you with your ancestors in just a matter of hours.

Update: News from Family Tree DNA explains how now you may locate other family members in your family tree from internal branches, not just your direct paternal or maternal lines. It is explained in the following video at: Family Finder

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Options in DNA Genetics

If you want DNA genetics it is not necessary to test every member of your family.   The Y-chromosome present in the cells of all males will yield results for all male members of your family.  Women lack the Y-chromosome and have only X chromosomes.  In this case, the mitochondrion of women is tested and findings apply to the female family members.

Popular media such as the television crime dramas show conclusive proof of DNA guilt or innocence.  DNA used for genealogy is not as fool proof.   Populations have been mixing since humans first left Africa 150,000 years ago, so while a DNA marker reveals a strong link of origin to a single group, it is not 100 percent guaranteed proof since no marker has been found to lie exclusively in one group.

Researchers believe every person on earth originates from only 100,000 early individuals and in some ancient way we are all related; your neighbor, your colleague, your best friend:  Even famous and infamous individuals like President Roosevelt or Henry VIII !

In spite of the scientific advances in DNA technology, the test is relatively simple.  A painless cheek swab is sent to a lab for analysis.  Technicians extract, amplify and analyze the cellular sample and then compare and match it to DNA samples from a database of other samples.  At this point they are looking to link it to a particular haplotype which is a grouping of closely linked genes.

When a person is found to share maternal or paternal ancestry lines with other people it is called lineage testing.  There is another kind of analysis called admixture testing which centers on 22 pairs of chromosomes not related to gender such as the Y which is exclusive to men and the X present in men and in women.

Regardless of the method you choose, DNA genetics will yield far more information about your ancestors than mere historical records can show.

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The Basics of Surname Genealogy

There are several surname genealogy options available for anyone hoping to document their family tree.  In order to properly understand and document your Y-DNA test results for your male ancestors, which is also called surname genealogy, you will need to do some basic genealogical research.

Begin with the person you know best; yourself!  Using a website that facilitates ancestry searches, begin by writing everything you know about your origins and those of your family.

List the names and birthplaces of your parents and your grandparents if you know them.  Go back as far as you can.  Whether you know a lot about your family history or a little, this is a good place to start.

If you choose a more traditional approach, write about your family history offline, the old fashioned way.  Get a paperboard and construct a family tree using documents and photographs.  In these modern times your display may include website addresses that contain audio and video files from your family uploaded to the web.

Creating a family history book is an exciting project that capitalizes on the scrapbooking hobby so popular today.  There are several websites that can help you with design ideas for your project.  A quick search on scrapbooking will bring you many choices.

One of the best resources for information about your family is your oldest family members.  Talk to them and get them involved; your grandparents, aunts and uncles, your great-grandparents if they are living.  They have many interesting stories to tell but often won’t offer them up because they think no one is interested.

If you show an interest in their early years you’ll be amazed at what you learn.  You’ll see these family members in a whole new light and you’ll have a treasure trove of new information to write down and share with future generations.

If you decide to interview older relatives, consult with a website that has ideas on the types of questions to get you started.  Once you have the information, the most exciting aspect of surname genealogy is to share it with other family members so that your ancestry becomes a well-worn tale.

The traditional research methods described above coupled with modern day Genealogy DNA testing will bring you many hours of fascinating fun.

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