I started typing an answer, but realized Wikipedia could probably do it better. In short, sequencing and checking for specific mutations are very, very differen

I started typing an answer, but realized Wikipedia could probably do it better. In short, sequencing and checking for specific mutations are very, very different processes. Sequencing: https://en.wikipedia.org/wiki/Whole_genome_sequencing https://en.wikipedia.org/wiki/Whole_genome_sequencing Microarrays: https://en.wikipedia.org/wiki/DNA_microarray https://en.wikipedia.org/wiki/DNA_microarray