Point mutation.
G2029841A
Q257Q | Actn-PB; Q257Q | Actn-PC; Q257Q | Actn-PD; Q257Q | Actn-PG; Q257Q | Actn-PH; Q257Q | Actn-PI; Q257Q | Actn-PJ
Actn3 is a silent substitution in a Gln codon from GAG to GAA which is reported to change the context of the adjacent splice donor sequence.
Abnormalities are present in the fibrillar and tubular flight and leg muscles.
Thoracic muscle abnormalities, easily detach from cuticle and readily dissociate into single fibers: Z discs and myofibrillar attachments are disrupted. Epithelial 'tendon' cells are less affected.
Homozygotes are flightless with a normal wing posture.
Actn3, wupAhdp-2 has flightless | dominant phenotype
Homyk.