I write a lot about reproduction, so my way into this book, as with so many things these days, was sperm. Every day, men produce millions of new sperm, derived from stem cells, which have to replenish themselves through cell division. That involves copying the entire genome: the body’s complete set of instructions, which is about 3 billion “letters”…
Alison Motluk
Alison Motluk is a Toronto journalist specializing in health and science.