. >> when neubauer was trying to find twins to study, he went to a catholic church agency.eparate what god puts together. >> neubauer died in 2008 and louise wise services closed in 2004. the agency that absorbed all of its records did not respond to cnn's multiple requests for comment. >> i notice the way you hold your hands. do you notice, the way your legs are crossed? >> we're noticing everything right now. >> as i said in the piece there, this makes you ask questions about nature or nurture. michelle and alison 54 years apart, they find each other, and you watch them, the way they carry themselves, the way they hold their bodies, speak, dress, all of that so similar. it makes you wonder how much of a role does nature play? now, if you ask experts, they'll give you some variation of the answer it's 50/50. and also, it's starting to change, because we know now more than ever that your genes, your blueprint can change in response to how you interact with your environment. epigenetics. it's not necessarily nature or nurture. it's more nature and nurture. and i think michel