Introduction

Abstract

This series of articles are devoted to TGD inspired ideas related to DNA and genetic code. The first article is about many-sheeted DNA and genetic code.  In the first part of the article basic facts about genetics are summarized and the notion of many-sheeted DNA is introduced. In the second part of the article a model of genetic program is considered, and some TGD inspired ideas about regulation of morphogenesis are discussed. Second article represents two models for protein folding relying on the notion of magnetic body: both models represent limiting situations and a more realistic model could be a hybrid of them.  The third article discusses some rather speculative physical realizations of the genetic code with chemical realization seen only one possible realization among many.  Most ideas are highly speculative and can be defended only by the fact that they follow rather naturally from the basic TGD.