How Did the Beefsteak Tomato Get So Beefy?

Have you noticed that your supermarket produce is looking plumper? Farmers have cross-bred plants for centuries to make bigger, better crops. Reporting in Nature Genetics, researchers examined the genes that lead to oversized beefsteak tomatoes. Biologist Zach Lippman, one of the authors on that study, describes how genes affect fruit size, yield, and taste.