The Y-chromosome, often associated with male aggression, possesses an inherent instability that contradicts its reputation. This paradox highlights the complex relationship between genetic traits and behaviors, suggesting that what is commonly perceived as a masculine hallmark is actually more nuanced and unstable than it seems.

In "Adam's Curse," Bryan Sykes explores the implications of this genetic instability on our understanding of masculinity and evolution. The idea that Adam, representing men, is both a victim and a source of a genetic curse invites readers to rethink the biological foundations of gender and behavior.