You may have read of this project in the recent Clan Forbes Society newsletter. No medical information is collected. The testing looks at the non-coding or "junk" DNA region of your genome. (See definitions below).
The 23rd chromosome is known as the sex chromosome. As with the other chromosomes, one is inherited from the father, and one from the mother. The 23rd chromosome from the mother is always an X. From the father, a person either inherits an X chromosome or a Y chromosome. The chromosome inherited from the father determines their sex. An X from the father would result in an XX which is a female, and a Y from the father would result in an XY, which is a male. The Y chromosome is transmitted from father to sons. Scientists have identified a small portion, which is passed virtually unchanged. Testing of this portion of the Y chromosome provides information about the direct male line, which is the father, his father, and so forth back in time.
MY PERSONAL OBJECTIVE James Forbes (~1635-1692) of Hartford, Connecticut was a native of Scotland. My hope is for verification of the circumstantial connection I've established to James Forbes. The aim is to find genetic matches to others with a clear line of descendancy from James.
. . . And please inform your FORBES friends of the project.
Ken Forbes Project Administrator
Genome The entire complement of genetic material in a chromosome set. The genome in the humans is made of 46 chromosomes, with a total of 3 billion bases pairs.
Junk DNA Stretches of DNA that do not code for genes, also called non-coding DNA. Most of the genome consists of non-coding DNA, and was therefore long thought to be ‘junk.’ In addition to including markers that are helpful for genetic genealogy, more recently, parts of these non-coding stretches have been found to have regulatory and other functions.
Main Family Tree DNA Homepage - click on "Projects" at top of page - then the "F" category - then "FORBES" for the Join Page http://www.familytreedna.com/http://www.familytreedna.com/