Professors Patricia Wittkopp and Jianzhi Zhang each wrote a chapter in the newly published "The Princeton Guide to Evolution," which accompanies the popular “Princeton Guide to Ecology,” published in 2009.

The book was published in December 2013 by Princeton University Press. Zhang’s chapter is titled "Gene Duplication." Wittkopp's is "Evolution of Gene Expression."

“The Princeton Guide to Evolution” is a comprehensive, concise, and authoritative reference to the major subjects and key concepts in evolutionary biology, from genes to mass extinctions, according to the Princeton University Press. Edited by a distinguished team of evolutionary biologists, with contributions from leading researchers, the guide contains more than 100 clear, accurate, and up-to-date articles on the most important topics in seven major areas: phylogenetics and the history of life; selection and adaptation; evolutionary processes; genes, genomes, and phenotypes; speciation and macroevolution; evolution of behavior, society, and humans; and evolution and modern society. Complete with more than 100 illustrations (including eight pages in color), glossaries of key terms, suggestions for further reading on each topic, and an index, this is an essential volume for undergraduate and graduate students, scientists in related fields, and anyone else with a serious interest in evolution.