All of 23andMe’s independent directors have resigned from its board in a rare move that marks the latest challenge for the genetic-testing company.

All seven independent directors of DNA-testing company 23andMe resigned, following a protracted negotiation with CEO Anne Wojcicki over her plan to take the company private.

All seven independent directors of 23andMe’s board resigned on Tuesday, citing disagreements over the chief executive’s plan to take the company private. The departures leave just one