Is there a R package for analyzing twins raised together and apart?

I have data from a clinical study on samples of twins raised together and apart. I have not found much resources for this type of analysis. Can anyone point me in the direction of these type of information or R package? CHEERS


Less is more. Stay pure. Stay poor.
He needs the deVito_swartzeneggeR package. Just kidding, good luck. But yeah, what type of analyses: supervised, semi-supervised, unsupervised; genetic or social outcomes, etc.

Are you just looking to control covariance structure or pairing, etc.?