[Random amplified polymorphic DNA (RAPD) analysis of Drosophila simulans in the mainland of China].

The widespread distribution of Drosophila simulans in the mainland of China was found recently. Random amplified polymorphic DNA (RAPD) was used to analyzed DNA polymorphisms of 38 Drosophila simulans populations collected from the mainland of China. The origins of D.

[The distribution and origin of P elements in Drosophila melanogaster strains from northeast China].

Eukaryotic transposable elements, especially P transposable elements of Drosophla, are very important to study the evolution of biology. We collected 130 single--female lines of D. melanogaster from 13 places in Northeast China and 3 places nearby which are Beijing(BC), Yantai (YT), Huhehaote(HHT) in 1999 and 2000.