Brains On! Science podcast for kids Let's Go Bananas
Feb 24, 2026
A voice assistant update makes everything about bananas and nothing else. Scientists explain how bananas share genes with us and why they make other fruit ripen. Learn why grocery bananas lack seeds and how farmers clone them. Hear the history of the classic banana-peel slip gag and a bunch of silly banana jokes from listeners.
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Why Humans And Bananas Share Genes
- Humans and bananas share many similar genes because both evolved from ancient single-celled life and keep key functions like consuming oxygen.
- Dr. Janina Jeff explains about 2% of the genome are genes that code proteins, and about half of those genes are similar between humans and bananas.
What The '50% With Bananas' Actually Means
- Humans share 99.9% of DNA with each other, but only about 10–18% of genomes overlap with other plants; the 50% banana stat refers to shared genes, not whole genomes.
- Dr. Janina Jeff distinguishes between genome (all DNA) and genes (the ~2% that code proteins) to clarify the statistic.
Banana Ethylene Makes Other Fruit Ripen Faster
- Bananas produce lots of ethylene gas which accelerates ripening in themselves and nearby fruits.
- The episode's fruit story shows bananas turning green to yellow to brown while nearby apples soften faster due to banana ethylene emissions.