Is this the Keystone Q references?
Our cloning techniques (at least the knowledge and processes made available to us) are not the best. Many of the organisms have issues such as deformities or shortened life spans. Identical twins share DNA, as a single zygote splits to form two individuals. Maybe something in the DNA of twins (be it the DNA itself or a process it undergoes) could help improve our cloning capabilities for organ production of the super wealthy?