Which is the best evidence that a gene involved in antibiotic resistance in bacteria underwent lateral gene transfer? a) The number of copies of the gene varies across lineages. b) It shows many more nonsynonymous substitutions compared with synonymous ones. c) It has accumulated many deleterious mutations within a lineage. d) It has a phylogeny that is very different from those of most other genes. e) It shows many more synonymous substitutions compared with nonsynonymous ones.
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This could suggest gene duplication or loss, but not necessarily lateral gene transfer. Show more…
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