Why Bird Penises Are So Weird

From the creator

Male birds have the largest genital diversity of any class of animals because their sex chromosomes make it easy to pass male-helping mutations down the line. LEARN MORE ************** To learn more about this topic, start your googling with these keywords: - Sex chromosome: A chromosome involved in determining the sex of an individual. - Cloaca: A posterior orifice that serves as the only exit for the gastrointestinal, urinary and genital tracts. - Mutation: An alteration in the DNA sequence that makes up a gene. - Sexually-selected Trait: A trait based on a mutation that confers a reproductive advantage. - BMP4: A protein whose presence halts the growth of bird penises in the egg. If you liked this week’s video, you might also like: An article from The Week about some of the strangest penises in the animal kingdom: http://theweek.com/articles/474417/12-weirdest-animal-penises-earth-updated CREDITS ********* Script Writer: David Goldenberg Script Editor: Kate Yoshida Video Illustrator: Ever Salazar Video Director: Emily Elert Video Narrator: Emily Elert With Contributions From: Henry Reich, Alex Reich, Peter Reich Music by: Nathaniel Schroeder MinuteEarth is produced by Neptune Studios LLC https://neptunestudios.info SUPPORT MINUTEEARTH ************************** If you like what we do, you can help us!: - Become our patron: https://patreon.com/MinuteEarth - Our merch: https://dftba.com/minuteearth - Our book: https://minuteearth.com/books - Share this video

Published 2017-10-25 · Watch on YouTube ↗
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