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Figure 1 | BMC Systems Biology

Figure 1

From: BBH-LS: an algorithm for computing positional homologs using sequence and gene context similarity

Figure 1

Gene tree for three gene showing the different types of homologs. The gene tree for three genes g, h, and h' that descended from a single ancestral gene in the most recent common ancestor (MRCA) of genome G and H. Gene g is orthologous to both h and h', but only g and h are positional homologs because h is the direct descendant of the ancestral gene. Genes h and h' are paralogs as they are separated by a duplication event.

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