by Katherine J. Wu figures by Daniel Utter Let’s talk about sex. Seriously. Not intercourse, though – more about how genetic sex is programmed during development. Sexual identity has been in the news often lately, and unsurprisingly so: the past few years have yielded sweeping reforms in civil rights, spurring new conflicts surrounding everything from age-old battles in gender equality to legislation enforcing anti-transgender bathrooms. … Continue reading “I’m XY and I Know It”: Sex Determination Systems 101