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Recommended for: Grades 9-12

Resource: Animal Body Plans: Homeobox Genes

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The homeobox genes that define the basic body plan of mice and fruit flies are illustrated in this graphic. The accompanying article describes how these genes act as "molecular architects" in all animal species.
 

Teachers' Domain, Animal Body Plans: Homeobox Genes, published September 26, 2003, retrieved on ,
http://www.teachersdomain.org/resource/tdc02.sci.life.gen.homeobox/

 
The discovery of homeobox genes, their role in controlling body shape, and their astonishing similarity across widely different species has yielded new insights into both how embryos grow and how life evolved from a common ancestor. Homeobox genes evidently duplicated twice during the evolution of vertebrates from invertebrates; mammals have 4 clusters of about 10 genes each, while the fruit fly has only 1 group of 10.
National Science Digital Library

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Source: Adrienne Zihlman, The Human Evolution Coloring Book

Resource Produced by:

WGBH Educational Foundation

Collection Developed by:

WGBH Educational Foundation

Collection Credits

Collection Funded by:

National Science Foundation