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| Parasitic plants show very recent acquisition of some genes from the host plant species they parasitize; sometimes genes even become part host-gene and part parasite gene. |
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| hundreds of bacterial genes in their chromosomes (transferred from the ancestral mitochondrion) |
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| plants also contain hundreds of |
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| cyanobacteria genes (transferred from the chloroplast ancestor) |
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| the most parsimonious tree is the one that requires the fewest number of evolutionary events (fewest number of character changes mapped on the tree) |
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| Clustering by percent divergence (sometimes corrected for DNA data using mathematical models) |
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