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Full-Text Articles in Life Sciences
Effects Of Selection For Halothane Resistance On Lipid Concentration And Composition In Drosophilia Melanogaster, Paula S. Fritsch, Dave Dapkus
Effects Of Selection For Halothane Resistance On Lipid Concentration And Composition In Drosophilia Melanogaster, Paula S. Fritsch, Dave Dapkus
Journal of the Minnesota Academy of Science
Drosophila melanogaster is increasingly used as a model system for anesthesia studies. Lipids may play a role in anesthetic resistance by sequestering the hydrophobic anesthetics from nervous tissue. Alternatively, changes in membrane lipid composition (phospholipids and/or cholesterols) may contribute to resistance through alteration of neurological membranes. This project studied the relationship of lipids to anesthetic resistance in a strain of Drosophilia melanogasier with a high level of halothane resistance produced by 13 generations of mass selection. The estimated dose of anesthetic needed to produce anesthesia in one-half of the flies tested (ED50( for this strain was 2.3 times that of …
The Effects Of Density And Ddt On An Inversion Polymorphism In Drosophila Melanogaster, Paul H. Zuzick, Dave Dapkus
The Effects Of Density And Ddt On An Inversion Polymorphism In Drosophila Melanogaster, Paul H. Zuzick, Dave Dapkus
Journal of the Minnesota Academy of Science
Inversion polymorphism may be maintained by some form of balancing selection, A laboratory population maintained for many years at small size should contain little genetic variation due to the effects of genetic drift. This study analyzed a Drosophila population which exhibits a persistent inversion polymorphism. The population has been subjected to selection for DDT resistance since 1959. The purpose of this study was to determine if: a) balancing selection was involved and b) if the selection was DDT-related. To study these questions, three pairs of populations were set up at different inversion frequencies: 95%, 55% (equilibrium value) and 5%. One …
Partial Sterility In Drosophila Melanogaster: Schemes For Complex Chromosome Rearrangements, Richard V. Kowles, John Richards, Christine Adams, Jeni Lichtenfels, Robert Trauscht, Robert Husfield
Partial Sterility In Drosophila Melanogaster: Schemes For Complex Chromosome Rearrangements, Richard V. Kowles, John Richards, Christine Adams, Jeni Lichtenfels, Robert Trauscht, Robert Husfield
Journal of the Minnesota Academy of Science
These investigations are pilot studies of possible chromosome rearrangements to effect sterility in insects . Techniques of oviposition and partial sterility in Drosophila melanogaster are described. Partial sterility is measured for a number of different crossing combinations using wildtype stocks, heterozygous translocation stocks, and homozygous translocation stocks : the highest percent partial sterility occurring when F-1 intercross translocation stocks are used as one of the parents. Three different crossing schemes to gain more complex chromosome rearrangements and their outcomes are reported, though tests indicated negative results in these . Methods devised to distinguish between simple and complex translocation stocks in …
Comparison Of Phototactic Behavior Of Three Populations Of Dropsophila Melanogaster, Ross S. Anderson
Comparison Of Phototactic Behavior Of Three Populations Of Dropsophila Melanogaster, Ross S. Anderson
Journal of the Minnesota Academy of Science
Phototactic response of three distinct breeding populations of Drosophila melanogaster are compared through experimental maze runs and under differing light stimuli. While it is suggested that more meaningful results may depend on intensified selection pressure and studies of a greater number of generations, evidence from these observations indicates a clear difference in photo tactic behavior between the fly population drawn from laboratory stock subject to in-breeding and the positive responses of the two populations captured "wild" and thus reflecting the selection process of nature.
The Apparent Genetic Relationship Between Campaniform And Trichoid Sensilla On Drosophila Wings, Vern Sisson, Charles L. Hamrum, Arthur W. Glass
The Apparent Genetic Relationship Between Campaniform And Trichoid Sensilla On Drosophila Wings, Vern Sisson, Charles L. Hamrum, Arthur W. Glass
Journal of the Minnesota Academy of Science
No abstract provided.
Technique For Demonstrating The Chromosomes In The Salivary Glands Of The Fruit Fly, Drosophila Melanogaster, M. M. Keith
Technique For Demonstrating The Chromosomes In The Salivary Glands Of The Fruit Fly, Drosophila Melanogaster, M. M. Keith
Journal of the Minnesota Academy of Science
No abstract provided.
The Mechanism Of Temperature Induced Reduction Of Tumor Frequency In A Tumorous Strain Of Drosophila Melanogaster, R. A. Kroman
The Mechanism Of Temperature Induced Reduction Of Tumor Frequency In A Tumorous Strain Of Drosophila Melanogaster, R. A. Kroman
Journal of the Minnesota Academy of Science
No abstract provided.
A Tumorous Head Mutation In Drosophila Melanogaster, Roy P. Thelander
A Tumorous Head Mutation In Drosophila Melanogaster, Roy P. Thelander
Journal of the Minnesota Academy of Science
No abstract provided.
The Interaction Of Certain Genes In Bristle Development Of Drosophila Melanogaster, Ray C. Anderson
The Interaction Of Certain Genes In Bristle Development Of Drosophila Melanogaster, Ray C. Anderson
Journal of the Minnesota Academy of Science
No abstract provided.
Increased Fertility In Drosophila In The Heterozygote Of Two Allelomorphs Each Homozygous Infertile, M. M. Green, C. P. Oliver
Increased Fertility In Drosophila In The Heterozygote Of Two Allelomorphs Each Homozygous Infertile, M. M. Green, C. P. Oliver
Journal of the Minnesota Academy of Science
No abstract provided.
Star-Recessive, A Spontaneous Mutation In Drosophila Melanogaster, Edward B. Lewis
Star-Recessive, A Spontaneous Mutation In Drosophila Melanogaster, Edward B. Lewis
Journal of the Minnesota Academy of Science
No abstract provided.