LOSS OF FUNCTION GENES. “Firstly, these mutations tend to be on terminal branches of the gene tree. Secondly, pseudogenes rarely accumulate many loss-of-function mutations. Although this suggests that cifA and cifB pseudogenes rarely codiverge with the Wolbachia genome for long periods, it is unclear whether this results from the loss of the Wolbachia infection or through the genes being deleted from the genome, for instance, by phage excision.”
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