Has anybody seen my gene?

Personal gene-mapping services are coming to market at a surprising rate. You can now have your own genome mapped by any number of small companies, for purposes of ancestry research, amusement, medical diagnosis, or criminal investigation. When did all these operations spring up, who's funding them, and exactly how many different ways can you pitch the same product?

Read the full story on MSNBC: "Genes 'R' Us: The new dot-coms?"