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<p>to develop phenotypically male. In mammals, the Y chromosome contains the <a href="page.php?w=SRY">SRY</a> gene, which usually triggers the differentiation of <a href="page.php?w=male_gonads">male gonads</a>. The Y chromosome is typically only passed from male parents to male offspring.</p>

<p><big> Overview </big></p>
<p><big>Discovery</big></p>
<p>The Y chromosome was identified as a sex-determining chromosome by <a href="page.php?w=Nettie_Stevens">Nettie Stevens</a> at <a href="page.php?w=Bryn_Mawr_College">Bryn Mawr College</a> in 1905 during a study of the</p><p>
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