Title :
Drosophila melanogaster Sexual Inheritance Patterns
Introduction: This experiment determines sexual inheritance patterns amongst drosophila melanogaster. The model species drosophila melanogaster was used to study the passing of genes from one generation to the next. These fruit flies are good model species because the birth and generation process happens very quickly comparatively. One generation of a fruit fly lasts approximately 10-14 days. Several different traits were chosen to be studied and crosses were conducted. Wild type drosophila melanogaster have red eyes, caramel bodies, and oval wings. The mutations that were studied are white eyes/miniature wings, sepia eyes/ebony body, and sepia eyes/ vestigial wings.
Several …show more content…
My results conclude the autosomal recessive, x-linked recessive, and autosomal dominant inheritance were involved in this study. The chi- squared value for the sepia/vestigial cross is 9.69, which is higher than the critical value of 7.815, however I chose to accept or fail to reject my 9:3:3:1 hypothesis do to random sampling error. The chi-squared value for white/miniature was 125.9, and sepia/ebony was 154.6. Because both chi-squared values were to high the hypothesis for white/miniature and sepia/ebony were rejected. However, the data shows the sepia/ebony followed autosomal dominant due to the data given, while white/miniature followed the x-linked recessive inheritance pattern because no female were affected. Sampling error may have been present due the fact that some flies may have escaped during examination, or some flies may have been trapped in the food and never recovered. These flies that were not added to the data may have potentially skewed the results. Also the fly sorting and examination process was delegated throughout the class, therefore some class members may have entered data or examined
Drosophila melanogaster Sexual Inheritance Patterns
Introduction: This experiment determines sexual inheritance patterns amongst drosophila melanogaster. The model species drosophila melanogaster was used to study the passing of genes from one generation to the next. These fruit flies are good model species because the birth and generation process happens very quickly comparatively. One generation of a fruit fly lasts approximately 10-14 days. Several different traits were chosen to be studied and crosses were conducted. Wild type drosophila melanogaster have red eyes, caramel bodies, and oval wings. The mutations that were studied are white eyes/miniature wings, sepia eyes/ebony body, and sepia eyes/ vestigial wings.
Several …show more content…
My results conclude the autosomal recessive, x-linked recessive, and autosomal dominant inheritance were involved in this study. The chi- squared value for the sepia/vestigial cross is 9.69, which is higher than the critical value of 7.815, however I chose to accept or fail to reject my 9:3:3:1 hypothesis do to random sampling error. The chi-squared value for white/miniature was 125.9, and sepia/ebony was 154.6. Because both chi-squared values were to high the hypothesis for white/miniature and sepia/ebony were rejected. However, the data shows the sepia/ebony followed autosomal dominant due to the data given, while white/miniature followed the x-linked recessive inheritance pattern because no female were affected. Sampling error may have been present due the fact that some flies may have escaped during examination, or some flies may have been trapped in the food and never recovered. These flies that were not added to the data may have potentially skewed the results. Also the fly sorting and examination process was delegated throughout the class, therefore some class members may have entered data or examined