Should researchers isolate the genetic root of homosexuality?

(Photo illustration by Lisa Larson-Walker. Photos by Library of Congress, Glow/Getty Images Plus, ktsimage/iStock/Getty Images.)

Queer people have a complicated relationship with our genes. On the one hand, “born this way” is recognized as the argument that won same-sex relationships equal treatment under the law. On the other hand, actually thinking about what it means for…