Hank introduces us to the relatively new field of evolutionary developmental biology, which compares the developmental processes of different organisms to determine their ancestral relationship, and to discover how those processes evolved. Also fruit flies with eyes on their legs and chickens with teeth! Like CrashCourse on Facebook: www.facebook.com/youtubecrashcourse Follow CrashCourse on Twitter: www.twitter.com/thecrashcourse References for this episode can be found in the Google document here: Table of Contents 1) EVO/DEVO - 00:51 2) Developmental Regulatory Genes - 2:00 3) Gap Genes - 2:39 4) Homeobox / HOX Genes - 2:50 5) Messed-Up Experiment - 6:16 6) EVO/DEVO & Evolution - 7:26 a) Chickens with teeth - 8:14 evolutionary developmental biology, biology, evo-devo, evolution, animal, organism, genetics, science, crashcourse, developmental regulatory genes, gap genes, homeobox genes, hox genes, instructions, hierarchy, bill mcginnis, junk DNA, gene products, embryo, switzerland, fruit fly, scientist, mutation, gene expression, chicken, teeth Support CrashCourse on Subbable: subbable.com/crashcourse

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