Drosophila Melanogaster Lab Report Essay

1302 Words Feb 6th, 2011 6 Pages
Introduction
In most kitchens the small flies that are found are Drosophila Melanogaster also called fruit fly. They are often brought in by ripened tomatoes, grapes and other perishable items from the garden. Drosophila melanogaster is a little two winged insect about 3mm long two winged insect that belongs to the Diptera, the order of the flies. The drosophila egg is about half a millimeter long. Fertilization takes about one day the embryo to develop and hatch into a worm-like larva. The larva eats and grows continuously, after two days as a third in star larva; it moults one more time to form an immobile pupa. Over the next four days, the body is completely remodeled to give the adult winged form, which then hatches from the pupal
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| |Normal wings |Normal wings |No wings |No wings |
| |Red eyes |White eyes |Red eyes |White eyes |
|Females |390 (267.375) |1* (0) |54 (89.125) |0 (0) |
|Males |129 (133.6875) |98 (133.6875) |17 (44.5625) |24 (44.5625) |
|Total |519 |99 |71 |24 |
| | | |Grand Total |713 |
|Wing/Eye |Expected |O-E |(O-E)2 |(O-E)2/E |
|+/+ Female |267.375 |122.625 |15036.9 |56.24 |
|+/+ Male

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