Google Inc. loves 23andMe Inc., a biotechnology startup conceived by co-founder Sergey Brin’s wife.

In its latest showing of financial affinity, Google disclosed yesterday that it has invested another $2.6 million in a company that analyzes people’s DNA to detect potential health problems before they occur.

Anne Wojcicki, who married Brin two years ago, started 23andMe while the couple was still dating.

Just a few weeks after Brin’s marriage, Google announced that it had bought a minority stake in 23andMe for $3.9 million.

The Internet search leader placed another $500,000 in 23andMe in late 2007.

Part of Google’s original investment was used to repay $2.6 million in financing that Brin had provided 23andMe.