Tomatoes come in all kinds of colors, sizes, and flavors. But what’s going on at the genetic level? What makes a tomato red or yellow? Tiny or giant?
Researchers are mapping the genomes of 22 varieties of nightshades—the family of plants that includes tomatoes, potatoes, and eggplants. They located the genes that control the size of tomatoes and eggplants and then used CRISPR gene editing to grow bigger fruits without sacrificing flavor.
Geneticist Michael Schatz joins Host Ira Flatow to talk about his latest research into nightshade genomes and the current state of genetically modified crops.
Sign Up For The Week In Science Newsletter
Keep up with the week’s essential science news headlines, plus stories that offer extra joy and awe.
Segment Guests
Michael Schatz
Dr. Michael Schatz is a professor of computational biology and oncology at Johns Hopkins University, based in Baltimore, Maryland.
Segment Transcript
This transcript is being processed. It will be available 2-3 days after this story’s publication date.
Meet the Producers and Host
About Shoshannah Buxbaum
Shoshannah Buxbaum is a producer for Science Friday. She’s particularly drawn to stories about health, psychology, and the environment. She’s a proud New Jersey native and will happily share her opinions on why the state is deserving of a little more love.
About Ira Flatow
Ira Flatow is the founder and host of Science Friday. His green thumb has revived many an office plant at death’s door.