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Chromosomal polymorphism in a Korean natural population of Drosophila melanogaster

✍ Scribed by Young Choi

Publisher
Springer Netherlands
Year
1977
Tongue
English
Weight
410 KB
Volume
47
Category
Article
ISSN
0016-6707

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✦ Synopsis

A natural population of D. melanogaster from Korea (Chungju) has been examined with respect to inversion polymorphism. Thirteen different inversions were found distributed approximately equally on chromosome pairs II and III. Some of them proved to be frequent and cosmopolitan, others rare and endemic. No difference was found between two samples in July and August. Non-random-association with respect to inversions on 2L and 2R seems to exist. Generally, double inversion heterozygotes are more, and double homozygotes less, frequent than expected. The inversion polymorphism of D. melanogaster is maintained by balancing selection and may be associated with lethals and enzyme polymorphism. The existence of a W-E-frequency cline for some inversions on the European-Asiatic continent is rather probable.

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