Exploring Different Types of Drosophila Mutants at Mohanlal Sukhadiya University
Discover the various Drosophila mutants, including Yellow Type, Ebony, Orange-eye, White Eye, Eyes Absent, Leg-headed, and Curly Wings, with unique genetic characteristics and visible phenotypes. This practical Zoology insight provides an in-depth look into mutations affecting body color, eye pigments, eye development, leg formation, and wing structure in Drosophila specimens. The described mutants offer a valuable resource for genetic and environmental interaction studies in a research and educational setting at Mohanlal Sukhadiya University, Udaipur.
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Topic Drosophila : Different Types of Drosophila Mutant MOHANLAL MOHANLAL SUKHADIYA SUKHADIYA UNIVERSITY UNIVERSITY UDAIPUR UDAIPUR B.Sc.-II-Year Practical Zoology Department Department of Zoology of Zoology By SAHA DEV JAKHAR
Yellow Type Location: Sex-linked (X chromosome) Mutations in the yellow gene produce flies with much paler bodies than wild type flies which look yellowish in color.
Ebony Location: Autosomal (chromosome 3R) A mutation in the ebony gene causes the body color of the flies to be much darker than in the wild type. The dark body phenotype is easily visible upon emergence, but will darken with age.
Orange-eye Location: they have a defect in their "white" gene, which normally produces the red pigments in the eye. In these flies, the white gene only works partially, producing fewer red pigments than it should.
White Eye Location : Sex-linked (X chromosome) Mutations in the white gene lead to flies with white eyes instead of the normal wild type red eyes.
Eyes Absent Location : Autosomal (chromosome 2L) Mutations in the eyes absent gene lead to flies with missing eyes - a very easy phenotype to see.
Leg-headed Location: they have a defect in their "antennapedia" gene (Latin for "antenna-leg"), which normally instructs some body cells to become legs. In these flies, the antennapedia gene falsely instructs cells that would normally form antenna to become legs instead.
Curly wings Location: Autosomal (chromosome 2L) Flies with mutations in the curly gene will have wings that curl upwards and outwards. If kept in 18c, the flies will appear similar to wild type flies. The expression of the curly-winged phenotype will increase with temperature, making this a good trait to demonstrate genetic- environmental interactions.
Vestigial Wings Location: they have a defect in their "vestigial gene," on the second chromosome. These flies have a recessive mutation. Of the pair of vestigial genes carried by each fly (one from each parent), both have to be altered to produce the abnormal wing shape. If only one is mutated, the healthy version can override the defect.
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