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Fig. 14. Recombination events between WT and mutant (*) DNA duplexes can be non-biased or biased. Biased gene conversion events will favour one of the alleles and either fix or remove mutations.

plastid genome (Wolfe et al. 1992). Gene order in E. virginiana and N. tabacum is conserved despite the loss of all photosynthesis-related genes. A large number of deletion events on a local scale mediated by replication slippage rather than recombination events between distant parts of the plastid genome would appear to be the major mechanism underlying selective gene loss and genome reduction in E. virginiana (Wolfe et al. 1992).

Fig. 14. Recombination events between WT and mutant (*) DNA duplexes can be non-biased or biased. Biased gene conversion events will favour one of the alleles and either fix or remove mutations.

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