Both patients have increased risk for disease (assuming they have unhealthy lifestyles), but their body's show this risk with different markers. (spoonfedcred.com)
If the condition is associated with several different marker combinations, one must discover and then test for each marker combination. (optigen.com)
But the exact causes of the vast majority of autism - related disorders remain a mystery: classic genetic studies, which tie the ailment to single nucleotide polymorphisms (SNPs — deletions, additions or substitutions of one unit in the genetic code), have returned a number of different markers with very few well - replicated candidates. (scientificamerican.com)