3 ms·SNP chips for what? Ancestry? Also carrier screening is a competitive market.by sjg007 6y agoSNP chips for what? Ancestry? Also carrier screening is a competitive market.asdff 6y agoYeah, 23andme uses a DNA microarray to genotype your sample whether it be for health screening or ancestry. It's cheap technology today.sjg007 6y agoYou missed the point.