Born by mistake, or connivance, to struggling parents in a small Lancashire cotton town in 1903, an uninspired Darlington inadvertently escaped the obscurity of farming life and rose instead, against all odds, to become within a few short years the world's greatest expert on chromosomes, and one of the most penetrating biological thinkers of the twentieth century. Harman follows Darlington's path from bleak prospects to world fame, showing how, within the most miniscule of worlds, he sought answers to the biggest questions--how species originate, how variation occurs, how Nature, both...