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Figure 2 | Biology Direct

Figure 2

From: Are we degenerate tetraploids? More genomes, new facts

Figure 2

Evolutionary history of Human HOX clusters and closely linked SP family members. Close physical linkage and congruency in the phylogenies of human SP gene family members and HOX clusters supports the view that vertebrate HOX gene clusters arose as a result of small scale gene duplication events involving chromosomal segments or gene clusters. 1d-3d, three rounds of segmental duplication. Features not drawn to scale.

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