Which of the given statements is incorrect about Family and Domain Analysis?

• A. Gene identification of predicted proteins in the genome is designed to discover the metabolic features of an organism
• B. In a particular organism or group of organisms, one particular domain can be expanded to perform a particular function
• C. Comparison of the domain content of an entire proteome with that of another proteome cannot help in revealing the biological roles of diverse domains in different organisms
• D. Different proteins are mosaics of domains that occur in different combinations in a given protein