2007 年 72 巻 3 号 p. 329-336
Polytene complement of Parasarcophaga ruficornis (Sarcophagidae: Diptera) has been analysed to provide data on intercalary heterochromatin (IH). The location of weak points and ectopic contacts has been attributed to the presence of IH in the polytene complement.
The spontaneously occurring weak points appear to be distributed on all the 5 polytene chromosomes. The telomeric end of right arm of chromosome II often turns back to form an ectopic contact with the region 5B/C of the same chromosome, thus, resulting in the formation of a loop.