"Every textbook of molecular evolution has a section on gene sharing, but this is the first book entirely devoted to the topic. Piatigorsky considers almost all aspects of gene sharing, provides numerous examples, and discusses the importance and contribution of gene sharing to evolution. He argues forcefully that gene sharing is widespread in many genomes. [...]
“It has been a dogma of evolutionary biology that gene duplication precedes the evolution for a new gene and protein function. Joram Piatigorsky stands this scenario on its head by showing that, tin the case of lens crystallins and probably other families, functional diversity can precede gene duplication. This revolutionary perspective proceeds unexpected insight into [...]
“This book introduces, explains and elaborates on the very interesting face that some genes produce proteins that serve different (and important) functions in the same organism. This is a remarkable story well told and intersting from both evolutionary and functional perspectives." - Russel D. Fernald, Stanford University