Heterochromatin polymorphism in the mitotic chromosomes from Taejeon and Kang-wha of Drosophila melanogaster has been examined by using Q-banding methods. The significant difference in fluorescence banding patterns was observed only in Y-chromosome, w...
Heterochromatin polymorphism in the mitotic chromosomes from Taejeon and Kang-wha of Drosophila melanogaster has been examined by using Q-banding methods. The significant difference in fluorescence banding patterns was observed only in Y-chromosome, which was arbitrarily classified into Y-type S and Y-type P. The frequency of Y-type S and Y-type P for Taejeon population was found to be 80.26% and 19.74%, while it was 88.57% and 11.43% for Kangwha population, respectively. However, no difference was observed in the heterochromatin condensing patterens at interphase. The fluorecence banding patteren observed in the 2nd, 3d, 4th, and X-chromosome from flies of both population were similar to that reported previously.
The genetic and evolutionary significance of the Y-type S, and Y-type P has been discussed.