3 Billion pairs of DNA define a human. Small changes in DNA are called SNPS.

Only 6-9 Million SNPS is all that is differentiates the DNA of 6.7 Billion people on Earth.

Today, genetic companies report on ~10% of known SNPS for the savvy consumer.

dnaSNIPs A Comparison Study into Consumer Genetic ServicesHome.htmlshapeimage_1_link_0
 
Helpful Links

Genetics testing company, Time Magazines Invention of the Year.

Genetics testing company, offers specialized one one on consultation.

Another Genetics company, offer a great tool to delve into your own DNA.

A great article about the state of Consumer Genetic testing services and occasional conflicting results.

National Human Genome Institute from the National Institutes of Health.