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The Journal of Heredity 2000:91(2)
© 2000 The American Genetic Association 91:128-133

Mosaic: a position-effect variegation eye-color mutant in the mosquito Anopheles gambiae

MQ Benedict*, LM McNitt, AJ Cornel, and FH Collins

Centers for Disease Control and Prevention, 4770 Buford Hwy., Division of Parasitic Diseases, MS F-22 Atlanta, GA 30341, USA *Corresponding author E-mail: mqb0@cdc.gov

The Mosaic (Mos) mutation, isolated in the F1 of 60Co-irradiated mosquitoes, confers variegated eye color to third and fourth instar larvae, pupae, and adults of the mosquito Anopheles gambiae. Mos is recessive in wild pink eye (p+) individuals, but is dominant and confers areas of wild-type pigment in mutant pink eye backgrounds. Mos is located 14.4 cM from pink eye on the X chromosome and is associated with a duplication of division 2B euchromatic that has been inserted into division 6 heterochromatin. Various combinations of Mos, pink eye alleles, and the autosomal mutation red eye were produced. In all cases, the darker pigmented regions of the eye in Mos individuals show the phenotypic interactions expected if the phenotype of those regions is due to expression of a p+ allele. Expression of Mos is suppressed by rearing larvae at 32°C relative to 22°C relative to 22°C. All of these characteristics are consistent with Mos being a duplicated wild copy of the pink eye gene undergoing position-effect variegation.


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This article has been cited by other articles:


Home page
 J HeredHome page
M. Q. Benedict, L. M. McNitt, and F. H. Collins
Genetic Traits of the Mosquito Anopheles gambiae: Red Stripe, frizzled, and homochromy1
J. Hered., May 1, 2003; 94(3): 227 - 235.
[Abstract] [Full Text] [PDF]


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