| Abstract: | For the first time, the glue protein patternpolymorphism in natural populations of D. n.nasuta and D. s. neonasuta has beenanalyzed by SDS-PAGE. The study involving 200 and 185isofemale lines comprising 2028 and 1900 individuals of D. n.nasuta and D. s. neonasuta, respectively,revealed the occurrence of eight variant glue proteinphenotypes in D. n. nasuta and seven in D.s. neonasuta. The number and frequency of variant phenotypes in differentpopulations of both species were found to vary. Analysisof glue protein patterns in the F1 progeny ofcrosses involving parents with variant glue proteinphenotypes revealed that the polymorphic fractions areproduced by co-dominant genes located on the Xchromosome. More than 87% of the naturally inseminatedadult females were found to produce polymorphic progeny. The heterozygous female larvae were found toexceed the homozygotes in the isofemale line progeny ofmost of the populations. |
