Sequencing the Y Chromosome
The Whitehead Institute

What makes a woman a woman? A man a man?

The laboratory of Whitehead Member David Page – one of the world’s foremost authorities on the genetic causes of male infertility and the genetic differences between males and females – has mapped and sequenced the entire Y chromosome, revealing a unique self-repair mechanism that allows the Y to protect its most important genes, including those critical to sperm production.