Transcriptomic data support a nocturnal bottleneck in the ancestor to gecko lizards

Introduction Introduction Materials and Methods Results and Discussion Data Availability Author Contributions References Behavioral shifts between different light environments, such as changes from diurnal to nocturnal activity patterns, have led to major modifications to the vertebrate eye over evolutionary time (Walls 1934; Walls 1942; Davies et al. 2012). These modifications involve changes to the types of photoreceptor cell present in the retina, changes in cell morphology, and alterations to the ancestral gene complement used by these cells to transmit light into a biochemical signal (Walls 1942; Simoes et al. 2015; Lamb and Hunt 2017). Two types of photoreceptors are present in most vertebr ...