Fly Lab Shannon Ladd Introduction: Famers and herders have been selectively breeding their plans and animals to produce more useful hybrids for thousands of years. It was somewhat of a hit or miss process since the actual mechanisms governing inheritance were unknown. Knowledge of these genetic mechanisms finally came as a result of careful laboratory breeding experiments carried out over the last century and a half. A contributing geneticist named Gregor Mendel (1822-1884)‚ discovered through
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Fruit Fly Genetics Lab Kelly Hernandez 5/31/14 Drosophila melanogaster is a small‚ common fly found near unripe and rotted fruit. It has been in use for over a century to study genetics. Thomas Hunt Morgan was the best biologist studying Drosophila early in the 1900’s. Morgan was the first to discover sex-linkage and genetic recombination‚ which placed the small fly in the forefront of genetic research. Scientists have used Drosophila for many reasons. For one they are very easy to maintain‚
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generation as well as autosomal or inherited genes (Miko‚ I. 2008). The traits we looked at were the eye colour for sex-linked genes and vestigial wings for the autosomal genes. Materials and method Firstly we paired off into groups of two and each group received two small plastic vials containing Drosophila melanogaster‚ one containing only males with the vestigial wing gene (Vg) and the other vial containing only females with the white eye gene (W). Alternate groups were given the opposite pairing
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dominant over black (g) Full wings (A) is dominant over vestigial wings (a) Red eye (R) is dominant over sepia eye (r) Two crosses were performed with the following results: Parents: heterozygous red‚ full wings‚ crossed with sepia vestigial wings Offspring: 131 red‚ full 120 sepia‚ vestigial 122 red‚ vestigial 127 sepia‚ full Parents: heterozygous gray‚ full wings‚ crossed with black‚ vestigial wings Offspring: 236 gray‚ full 253 black‚ vestigial 50 gray‚ vestigial 61 black‚ full Are any of these
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Within the context of the period 1895-1995 to what extent were the anti-Semitic policies implemented by the right wing elites during the Vichy Regime from 1940-1944 a reflection of their popularity within France? To this day the period of French Occupation and the Vichy Regime remains one of the most contentious and sensitive in modern French history. After suffering a crushing military defeat to Germany in the summer of 1940 an armistice was signed and the country was divided: the northern half
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used for this dihybrid cross experiment are white eyes (w) and vestigial wings (vg). The white eyes are the sex linked trait. These traits were taken and crossed with wild type D. melanogaster. The experiment that we ran was to be completed by April 20‚ 2006. There are three other people that I worked with in this experiment‚ Melissa Broadway‚ Kelli Hand‚ and Erin Hill. Kelli and I did a cross that involved wild type/vestigial winged males and white eye/wild type females (fig. 1‚ 3‚ 4).
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Nenad Stefanovski Ms Fleming IB1 History 18 March 2013 “Left Wing single party states achieve power as the result of a revolutionary process against tradition.” Does this adequately explain how any one single party state that you have studied acquired power? In 1917‚ a revolution took place in Russia that overthrew the traditional Tsarist regime and brought a single party state‚ the Bolshevik Party‚ into power. The Bolshevik party harnessed the revolutionary spirit from the overthrow of the
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recessive it is given a lower case letter code. For example the mutant “Ebony” has a much darker shiny black body than the wild type. Thus as ebony is a recessive mutant trait it is given a lover case ‘e’. Because the wild type fly has a dominant trait‚ it is denoted over the mutant letter code being recessive. For example if we cross a wild type fly with an ebony body fly it will produce an offspring with a normal body colour (not ebony) because the wild type is the more dominant gene. Of course though
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The flies can have white‚ red‚ or sepia colored eyes‚ the bodies can be ebony or grey‚ and the wings can be long‚ short‚ or wingless. Also‚ some mutations may be beneficial for an organism‚ while others may be fatal. The possible mutations for fruit flies are white (w) - white eyes‚ ebony (e) - dark colored body‚ dumpy (dp) - short wings‚ bar (B) - red triangle shaped eyes‚ vestigial (vg) - small wings‚ apterous (ap) - no wings‚ and sepia (se) - dark round eyes. Also‚ a “normal” Drosophila melanogaster
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The wild-type D. melanogaster possesses large and round wings‚ red eyes‚ and a grey body color. Mutant organisms may display differences in wings (apterous‚ miniature‚ vestigial)‚ eye color (sepia‚ white)‚ or body color (ebony) (McGill University‚ 2017). The objective of this experiment is to cross mutant fruit flies and examine three traits (wing shape‚ eye color and body color) of the F2 generation to determine their mode of inheritance; whether they
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