Writing for the court, Justice Clarence Thomas said isolated DNA is a “product of nature and not patent eligible merely because it has been isolated.” At the same time, Thomas said synthetic molecules known as complementary DNA, or cDNA, can be patented because they require a significant amount of human manipulation to create.
Seems perfectly sane. Raw genes, the ones you find in nature are, wait for it — natural. Other bits of manipulated DNA / RNA / protein which take skill and time to create are potentially patentable. Oddly, Myriad Genetics stock actually rose on that information.