Day: May 18, 2022

  • Nocturnal Bottleneck

    Nocturnal Bottleneck

    Shownotes 1. Rhodopsin The 4 opsins that vertebrates had at the time of the cambrian explosion was just one step short of what we consider the full modern complement of opsins, which includes the 4 classes of cone opsins, plus RH1, used in Rhodopsin. Towards the end of the Cambrian, about 500 million years ago, […]