Drosophila Inheritance Patterns

Drosophila Inheritance Patterns
Gage Howard
May 7, 2012
Honors Genetics
Mrs. Jennings

ABSTRACT

INTRODUCTION
The purpose of this essay was to determine the inherited patterns of the tenderness distort and the cases of wings of every last(predicate) of the fruit go, Drosophila melanogaster. The dead type phenotype eye color is red, and the mutant eye color is sepia, a brownish- black color. The wild type phenotype wing form is elongated, and the mutant wing shape is shorter and crinkled. The Drosophila melanogaster has intravenous feeding chromosomes. The factor that has a mutant hereditary pattern it is found on chromosome two and three. There argon four distinct stages in the life of the fruit fly: testicle (Fig. 1), larva (Fig. 2), pupa (Fig. 3), and adult (Fig. 4). At room temperature, a fresh socialization of the Drosophila melanogaster will produce new flies in two week: eight years in the clump and larva stages, and six days in the pupal stage. Two days after the flies emerge the female flies are already starting to reproduce. The Drosophila melanogaster is a good type of fruit fly for genetic studies because they are easily cultured, the flies feel a great generation time, and D. melanogaster also have good mutant forms. A female can aim six hundred eggs in just ten-spot days (Flagg, 2005).



It is hypothesized that the mutant phenotypes of vestigial wings and sepia eye color are inherited in an autosomal recessive allele fashion as evidence by the F2 generation show a Mendelian inheritance pattern of a 9:3:3:1 phenotypic ratio back up by a chi-square test. The Mendelian inheritance is a scientific theory of how hereditary characteristics are passed from parent to organisms to offspring. This theory was primitively derived from Gregor Mendel. Gegor studied pea plants and said that in the genetic inheritance patterns, there was a dominant and recessive gene, and that the dominant gene is more expressed over the recessive gene.

Fig. 1 peltFig. 2 LarvaFig. 3 PupaFig. 4 Adult

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