Pericentromeric and intercalary #alpha#-heterochromatin of polytene chromosomes in the malaria mosquito

摘要

The properties of heterochromatin from polytene chromosomes of the malaria mosquito Anopheles messeae Fal. and A. atroparvus V. Tiel. were studied by various methods of differential staining and by hybridization in situ with two repetitive DNA sequences of Drosophila melanogaster. In malaria mosquito, the heterochromatin was heterogeneous. Two forms of #alpha#-heterochromatin were revealed: pericentromeric and intercalary heterochromatin, which is localized within internal chromosome regions.