The Lethality of the k11209 Line of Drosophila melanogaster

Presentation Type

Poster/Portfolio

Presenter Major(s)

Cell and Molecular Biology

Mentor Information

Bruce Ostrow, ostrowb@gvsu.edu

Department

Biology

Location

Henry Hall Atrium 38

Start Date

13-4-2011 2:00 PM

End Date

13-4-2011 3:00 PM

Abstract

The k11209 line of Drosophila melanogaster contains the transposon PlacW inserted in the second chromosome. It is homozygous lethal. If the transposon insertion is the cause of lethality, removing it should produce wild type flies. We removed PlacW from the k11209 genome by mating k11209 flies with a line containing the enzyme transposase. 18 lines of offspring lacking PlacW, called delP, were collected and back-crossed with the k11209 stock. We hypothesized this would produce wild type flies. However, this produced a lethal phenotype. This could be caused by an imprecise excision of the transposon from the delP lines or a second site lethal mutation. To distinguish between these possibilities, 9 delP lines were crossed with a line that had a deletion where PlacW had been. The offspring of this cross were viable, indicating that PlacW had excised precisely from the delP lines. We are currently attempting to remove the hypothesized lethal mutation.

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Apr 13th, 2:00 PM Apr 13th, 3:00 PM

The Lethality of the k11209 Line of Drosophila melanogaster

Henry Hall Atrium 38

The k11209 line of Drosophila melanogaster contains the transposon PlacW inserted in the second chromosome. It is homozygous lethal. If the transposon insertion is the cause of lethality, removing it should produce wild type flies. We removed PlacW from the k11209 genome by mating k11209 flies with a line containing the enzyme transposase. 18 lines of offspring lacking PlacW, called delP, were collected and back-crossed with the k11209 stock. We hypothesized this would produce wild type flies. However, this produced a lethal phenotype. This could be caused by an imprecise excision of the transposon from the delP lines or a second site lethal mutation. To distinguish between these possibilities, 9 delP lines were crossed with a line that had a deletion where PlacW had been. The offspring of this cross were viable, indicating that PlacW had excised precisely from the delP lines. We are currently attempting to remove the hypothesized lethal mutation.