How do you know whether you are male or female?

New research published online this week in the open-access journal PLoS Biology investigates this basic and much-studied question in the fruit fly, and comes to a surprising new conclusion.

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<p><a href="http://www.physorg.com/news117954619.html">How do you know whether you are male or female?</a></p> <p>New research published online this week in the open-access journal <i>PLoS Biology</i> investigates this basic and much-studied question in the fruit fly, and comes to a surprising new conclusion.</p>