No matter what relationship we may have with our siblings, it's amazing how much we are destined to have in common with them. You're usually raised in the same home environment, with the same parental figures, and there's even a pretty high chance that you share a womb — sometimes at the same time.
Despite all this, families are full of brothers and sisters who couldn't be more different. This is what @trolloftheyea hoped to get to the bottom of when she posted about it on Twitter, and people had some interesting thoughts to give. There's definitely more than meets the eye when it comes to making an individual.
