DNA, SNPs, and epigenetics, without the textbook.
A plain-language primer for the curious. What your genome is, what a variant means, and how your genes and your choices work together.
Part 1
Your DNA is the blueprint.
Every cell in your body carries a copy of your DNA: about six billion letters, packed into 23 pairs of chromosomes. They spell out the instructions for every enzyme, receptor, and signal that runs your biology.
Roughly 99.9% of your DNA matches everyone else’s. The 0.1% that differs, three to four million letters, makes your biology yours: how fast you clear caffeine, how readily you clear histamine, how well you activate vitamin D. Sequencing reads all six billion letters; a consumer SNP chip reads a few hundred thousand and infers the rest.
Part 2
SNPs are the variations that matter most.
SNP (pronounced “snip”) stands for Single Nucleotide Polymorphism: one position where the letter you carry can differ from someone else’s. Most sit quietly in stretches the body never reads. The ones Mosaic focuses on sit inside genes that build an enzyme, a receptor, or a transcription factor, where one letter can change how it works.
“The C677T variant of MTHFR” is one: position 677 in the MTHFR gene, where some people carry C and some carry T. The T version makes a less efficient enzyme. The 108 insights in your Mosaic report are built on findings like that.
Part 3
Epigenetics is the volume knob.
Your DNA sequence is fixed at conception. What changes is how loudly each gene is read: how much of its protein your cells make at any moment. The switches that control that are called epigenetics, literally “on top of genetics.”
The switches respond to inputs you control: sleep, diet, exercise, stress, supplements, and toxin exposure. The variants tell you where the wiring is strong and where it’s constrained; the lifestyle modulators decide where you land. Every Mosaic insight names both.
Part 4
Why the whole pathway tells the story.
Most biology that matters runs through a pathway: a chain of enzymes, receptors, and cofactors, each with its own variants. Vitamin D takes three genes to get from sunlight to your cells: GC carries it, CYP2R1 activates it in the liver, VDR receives it at the cell. A variant in any one can slow the whole sequence.
The same holds for thyroid conversion (DIO1, DIO2, and selenium) and estrogen clearance (Phase I and II detox, plus receptor sensitivity). When a Mosaic insight spans a pathway, it names every gene in it, because the step that moves the pathway is often the one you weren’t looking at.
Part 5
Your genes are the instrument. Lifestyle plays the song.
A finding in your report is a setting, not a prediction. A DAO variant tells you histamine clearance may run a little slower, which makes some foods, times of day, and cofactor levels matter more for you than for someone else.
The report is the wiring diagram. Epigenetics is how you live in the body it describes. The Mosaic Biodata Institute trains practitioners in exactly that translation: read the wiring, then build the protocol.
Now see what your DNA actually says.
108 insights across nine areas of your health. Color-coded, written for daily use, paired with the lifestyle modulators that move each pathway.