How do fingerprints form? Even though many people think it’s random, a lot of it has to do with your genes!
Hosted by: Hank Green
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Why Are There Animals on My Face?!: https://www.youtube.com/watch?v=fRQG8C94yJ4&list=UUZYTClx2T1of7BRZ86-8fow
Twins x Twins = Twins?