BIO LAB!!

BIO LAB!! - White eyed mutations in Drosophila Melanogaster...

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White eyed mutations in Drosophila Melanogaster and their inheritance Michael J. D’Agnilli Biology 2: Genetics Experiment, Rowan University, Glassboro, New Jersey 08028 _______________________________________________________ Abstract We crossed the white eyed Drosophila melanogaster with the wild type and found that are hypothesis was correct. The white eyed trait is sex linked recessive based on the data that we collected. The only flaw was that are fly’s died and data was borrowed for other groups (see acknowledgement). Introduction In this experiment we used Drosophila melanogaster, fruit flies, as subjects to determine whether the wild type allele and the mutant sepia are sex linked and to determine if the mutant allele is dominant or recessive to wild type. Drosophila melanogaster are ideal test subjects because they are model organisms, they are small and are easily maintained organisms. They have a short generation period, about 14 days and females can lay 800 eggs in a lifetime. It also only has 4 pairs for chromosomes, 3 autosomeal and 1 sex-linked. Lastly Drosophila mutates easily and have very easily distinguishable mutations. In this experiment we used the methods that Thomas Hunt Morgan used in his experiment with Drosophila in the early 1900’s, Morgan based his research on the then newly rediscovered Mendelian inheritance. In a monohybrid cross Mendel would expect a 3:1 ratio in the F2 generation unless the trait was sex linked. Direct cross
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This note was uploaded on 04/14/2008 for the course BIO 2 taught by Professor Heckt during the Spring '08 term at Rowan.

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BIO LAB!! - White eyed mutations in Drosophila Melanogaster...

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