Syvanen, M Molecular clocks and evolutionary relationships: possible distortions due to horizontal gene flow. [electronic resource] - Journal of molecular evolution 1987 - 16-23 p. digital Publication Type: Journal Article ISSN: 0022-2844 Standard No.: 10.1007/BF02111278 doi Subjects--Topical Terms: AnimalsBiological EvolutionBirdsGenesHumansModels, GeneticMycoplasma--geneticsPrimatesSpecies SpecificityViruses--genetics