Heterochromatin variation in chromosome X in a natural population ofAnopheles willmori(Diptera: Culicidae) of Thailand
✍ Scribed by Visut Baimai; Ajjima Treesucon; Udom Kijchalao
- Publisher
- Springer Netherlands
- Year
- 1996
- Tongue
- English
- Weight
- 359 KB
- Volume
- 97
- Category
- Article
- ISSN
- 0016-6707
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✦ Synopsis
Among the eight families of Anopheles wiUmori derived from individual wild-caught females collected from Chiangmai Province (northern Thailand) and examined, four isofemale lines showed variation in the X chromosome, including the normal Xl and three aberrant types (X3, X4 and XL). It is postulated that these different types of X chromosomes could have arisen as a result of spontaneous chromosomal rearrangements involving tandem translocation and paracentric inversion followed by acquisition of constitutive heterochromatin. Such rare events of chromosomal changes have become established in the natural population of An. willmori in northern Thailand.