Chemistry of Life, The Journey of a Carbon Atom

Wow, you are just so original huh? Choosing the RNA one sooooo smart. Do you think you're better than everyone else? Your parents must really think you're special. I bet you think you're hot stuff.

You would've formed a Pyrimidine structure and could've only been able to bond with Adenine... if I let you choose Uracil.

You aren't special, go back and choose one that is used in DNA

... Some people.