Andrew & Polly explore keys -- the jingly kind and the genetic. Meanwhile, sneaky gift-giving giraffes Kevin & Louise have to crack Andrew & Polly’s new gate code to deliver some leftover Halloween candy. Our friend Jack shares about his brother’s very unique chromosomes and how he thinks genetic codes and kindness go together. And we get another house call from pediatric surgeon Dr. Willie Moses who explains more of the science behind genetic codes and how learning to focus as a choirboy unlocked his potential as a lifelong learner. Thanks to our awesome supporters at patreon.com/earsnacks -- just $2/month unlocks special bonus content and personalized birthday videos from us! Last but not least, many thanks to the kids on this episode -- Lev, Wilder, Gertie and Jack! If your family is interested in participating, visit earsnacks.org Will Kevin & Louise ever figure out the code to Andrew & Polly’s new front gate? What other kinds of special keys are there? Monkeys? Kiwis? Keanu Reeves? Find out next week in another episode of this podcast which is apparently hosted by giraffes now. Thanks to this episode's sponsors: Thank you to MIT Kids Press and  Candlewick Press! Get Ada and the Galaxies and We are One:  How The World Ads Up wherever books are sold. Thanks  StoryWorth.  Get $10 off your first purchase at http://StoryWorth.com/EARSNACKS