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Unformatted text preview: phylogram length of a branch indicates the number of changes that have taking place in a DNA sequence ultrametric tree all the branches are of equal length rRNA codes slowly mtDNA codes quickly homologous genes duplications lead to shared genes orthologous gene refers to a homologous gene that is passed in a straight line but have ended up in different gene pools because of speciation paralogous gene result from gene duplications Concept 25.5 neutral theory much evolutionary change in genes and proteins has no effect on fitness and therefore Darwinian selection domains bacteria, archaea, eukarya horizontal gene transfer occurred often in the early history of life between the domains, genes are transferred through means of transposable elements and fusion...
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