ZFIN Image: Tang et al., 2022, FIGURE 9

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FIGURE 9

Abridged general view of digestive lipases during the evolution among mammals and fishes. The vertebrate ancestor might have one pl gene and 1 bsal gene, the fish ancestor retained the one pl gene and one bsal gene, then fish ancestor divided into three groups, the first group lost the pl gene but had two to three bsal gene copies (group 1), the second group had one pl gene and had two to five bsal gene copies (group 2), the third group retained the one pl, and 1 bsal (group 3). The common ancestor of mammals obtained other PL gene copies but retained one BSAL gene.

Acknowledgments

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