M(3)d1 has no effect in heterozygotes. Probably lethal in homozygote. Approximately 95% of M(2)d1; M(3)d1 double heterozygotes have Minute bristles.
M(2)d1, M(3)d1 has visible | dominant phenotype
M(2)d1, M(3)d1 has Minute | dominant phenotype
M(2)d1, M(3)d1 has macrochaeta phenotype