Amino acid replacement: C1049A.
Expression of chnC1049A.Scer\UAS under the control of Scer\GAL4Bx-MS1096 results in an extra bristle phenotype in the notum.
Unlike overexpression of a wild-type chn transgene, expression of chnScer\UAS.cTa in photoreceptor cells after commitment to neuronal differentiation, driven by Scer\GAL4GMR.PF, does not affect cone cell development.