Hosts: Nels Elde and Vincent Racaniello Nels and Vincent reveal how introns - the parts of pre-mRNAs that are removed by splicing - were generated by DNA transposons in two different picoeukaryotes.   Become a patron of TWiEVO Introns from DNA transposons (Nature) Reverse transcription and integration lecture Image: Elde Lab Mobile Studios on location in Santa Fe, NM Letters read on TWiEVO 16 This episode is brought to you by Blue Apron. Blue Apron is the #1 fresh ingredient and recipe delivery service in the country. See what’s on the menu this week and get your first 3 meals free with your first purchase – WITH FREE SHIPPING – by going to blueapron.com/twie. Science Picks Nels - Did eukaryotes invent anything? (TWiM 144) Vincent - Virology course online Music on TWiEVO is performed by Trampled by Turtles Send your evolution questions and comments to twievo@microbe.tv