What is DNA sequencing?
Think of sequencing as reading the book of your personal genetics—every base (T, C, G, and A) is read in order and saved for the future. Using a reference sequence (a model sequence to compare to), Helix can determine when a base in an individual is different and the specific position of that variation within your DNA.
Most consumer genetics companies use a process called genotyping to read DNA data. If sequencing is reading a book, then genotyping is like reading a few letters on a few pages. Yes, you can learn a thing or two, but you don’t get the full story. Because genotyping requires an analysis of a specific variation, each experiment has to be done one at a time. With sequencing, you’re capturing all the words on all the pages and can flip through anytime.