Sharp, P M Selection pressures on codon usage in the complete genome of bacteriophage T7. [electronic resource] - Journal of molecular evolution - 150-60 p. digital Publication Type: Journal Article ISSN: 0022-2844 Standard No.: 10.1007/BF02100089 doi Subjects--Topical Terms: Base SequenceCodonDNA Restriction Enzymes--geneticsDNA, Viral--geneticsGenesGenes, ViralGenetic CodeMutationPyrimidinesRNA, MessengerRNA, Transfer--geneticsSelection, GeneticT-Phages--genetics