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Figure Caption
Fig. 1 Phylogeny of myosin heavy chain isoforms. Tree constructed using the minimum evolution method and bootstrapped with 1,000 repetitions. Using well-characterized myosin isoforms and routing the tree using Drosophila myosin heavy chain, it is clear that both the slow and fast isoforms identified (Danio smyhc1 and Danio myhc4) cluster with previously described slow and fast isoforms, respectively. It is also clear that fish and amniote isoforms cluster together, demonstrating that the origin of slow and fast isoforms occurred before the divergence of Sarcopterygians and Tetrapods.
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