scholarly journals From β- to α-Proteobacteria: The Origin and Evolution of Rhizobial Nodulation Genes nodIJ

2013 ◽  
Vol 30 (11) ◽  
pp. 2494-2508 ◽  
Author(s):  
Seishiro Aoki ◽  
Motomi Ito ◽  
Wataru Iwasaki
Keyword(s):  
Origin And Evolution ◽  
Nodulation Genes

Editorial: Origin and evolution of pyogenic granuloma

1974 ◽  
Vol 110 (6) ◽  
pp. 958-958 ◽  
Author(s):  
J. Wolf JE
Keyword(s):  
Pyogenic Granuloma ◽  
Origin And Evolution

Origin and evolution of the term Psychology: Addenda.

1980 ◽  
Vol 35 (8) ◽  
pp. 774-774 ◽  
Author(s):  
Hendrika Vande Kemp
Keyword(s):  
Origin And Evolution

Homology, Genes, and Evolutionary Innovation

2014 ◽  
Author(s):  
Günter P. Wagner
Keyword(s):  
Evolutionary Biology ◽  
Regulatory Networks ◽  
Biological Diversity ◽  
Cell Types ◽  
Origin And Evolution ◽  
Major Transitions ◽  
Form And Function ◽  
Historical Continuity ◽  
Evolutionary Innovation ◽  
Character Identity

Homology—a similar trait shared by different species and derived from common ancestry, such as a seal's fin and a bird's wing—is one of the most fundamental yet challenging concepts in evolutionary biology. This book provides the first mechanistically based theory of what homology is and how it arises in evolution. The book argues that homology, or character identity, can be explained through the historical continuity of character identity networks—that is, the gene regulatory networks that enable differential gene expression. It shows how character identity is independent of the form and function of the character itself because the same network can activate different effector genes and thus control the development of different shapes, sizes, and qualities of the character. Demonstrating how this theoretical model can provide a foundation for understanding the evolutionary origin of novel characters, the book applies it to the origin and evolution of specific systems, such as cell types; skin, hair, and feathers; limbs and digits; and flowers. The first major synthesis of homology to be published in decades, this book reveals how a mechanistically based theory can serve as a unifying concept for any branch of science concerned with the structure and development of organisms, and how it can help explain major transitions in evolution and broad patterns of biological diversity.

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