Mutant cells do not exhibit any mitotic defects.
Heterozygotes have shorter bristles than wild type flies. Eclosion is delayed by 57 hours.
RK3. Extreme Minute with fine bristles and small body.
M(3)65F1 is an enhancer of adult head phenotype of Dfd1
Considered to be allelic to M(3)69E ("M(3)h" in Lindsley and Grell, 1968, FBrf0020044) on the basis of lethality of the transheterozygote; however, del Prado and Ripoll, 1983, FBrf0039408) demonstrated that the two Minutes occupy different cytological positions, thus rendering fallible the rule that double Minute genotypes are no more severe in phenotype than the more severe member of the pair and suggesting some caution in concluding allelism based on lethality of transheterozygotes.