Jump to ContentJump to Main Navigation
Homology, Genes, and Evolutionary Innovation$
Users without a subscription are not able to see the full content.

Günter P. Wagner

Print publication date: 2014

Print ISBN-13: 9780691156460

Published to Princeton Scholarship Online: October 2017

DOI: 10.23943/princeton/9780691156460.001.0001

Show Summary Details
Page of

PRINTED FROM PRINCETON SCHOLARSHIP ONLINE (www.princeton.universitypressscholarship.com). (c) Copyright Princeton University Press, 2022. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in PRSO for personal use.date: 06 July 2022

The Genetics of Evolutionary Novelties

The Genetics of Evolutionary Novelties

(p.186) 6 The Genetics of Evolutionary Novelties
Homology, Genes, and Evolutionary Innovation

Günter P. Wagner

Princeton University Press

This chapter examines the molecular genetics of evolutionary novelties. In particular, it investigates which molecular mechanisms might be involved in the origination of novel gene regulatory networks (and, thus, character identity networks) and what these mechanisms imply for the origin of novel characters. The chapter begins with a discussion of the complex problem of the evolution of transcriptional regulation by focusing on the evolution of cis-regulatory elements (CREs) and the evolution of transcription factor proteins. It then asks whether novel pigment spots, such as the Drosophila wing spots, are novelties. It also explores an evolutionary novelty known as sex comb and the role of transposable elements in the origin of novel CREs. Finally, it considers the role of gene duplications, the evolution of micro-RNAs (miRNAs), and the possibility of a mechanistic difference between adaptation and innovation.

Keywords:   molecular genetics, evolutionary novelties, gene regulatory networks, character identity network, novel characters, transcriptional regulation, cis-regulatory elements, transcription factor proteins, transposable elements, gene duplication

Princeton Scholarship Online requires a subscription or purchase to access the full text of books within the service. Public users can however freely search the site and view the abstracts and keywords for each book and chapter.

Please, subscribe or login to access full text content.

If you think you should have access to this title, please contact your librarian.

To troubleshoot, please check our FAQs , and if you can't find the answer there, please contact us.