Imprecise excision of the progenitor, resulting in 2.4kb deletion within Ca-α1T.
Ca-α1TΔ115 homozygous adults or Ca-α1TΔ115/Ca-α1TΔ3 or Ca-α1TΔ115/Ca-α1TΔ135, previously trained under 12h:12h light:dark cycles, show a significant decrease in sleep time only during the dark period if they are kept under the same light:dark cycles, and show a significant increase in sleep time only during the subjective light period after being transferred into constant darkness conditions, as compared to controls.