Conclusion

We have seen some of the many ways in which what is conventionally and conveniently called information is contained within the coding sequence of DNA and how this is used to produce protein and serve other functions. There are probably many other ways in which information is stored in nucleic acid sequence, some perhaps quite vital but simply not yet known. Although the information metaphor is inexact or even misleading, understood in their contexts, the coding functions of DNA are certainly fundamental to life, and we will see the importance of this as well as the modular nature of genetic information throughout this book. In particular, we can now look at some of the basic elements of the way genotypes are related to phenotypes.

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