Extended Data Fig. 6: The history of intron acquisitions for the two exons of TAS1R3B in ray-finned fishes.
From: A vertebrate-wide catalogue of T1R receptors reveals diversity in taste perception
Filled boxes represent exons, and lines represent introns. The phylogenetic relationship among TAS1R3B-containing species is shown on the left. The closed and open arrowheads indicates the deduced timing (that is, the common ancestors of Actinopterygii and Actinopteri) for the acquisitions of introns in exons 3 and 6 of TAS1R3B, respectively. The total number of exons of the TAS1R3B genes is shown in parentheses.