Fruit Fly Genetics.pdf - Fruit Fly Genetics Lab Name(s Per/row Lab adapted from http/*All links can be

Fruit Fly Genetics.pdf - Fruit Fly Genetics Lab Name(s...

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1 Fruit Fly Genetics Lab Lab adapted from *All links can be found on Mrs. Davisson’s website under “AP bio lab” tab Background Information : Drosophila melanogaster is a fruit fly, a little insect about 3mm long, of the kind that accumulates around spoiled fruit. It is also one of the most valuable of organisms in biological research, particularly in genetics and developmental biology. Drosophila has been used as a model organism for research for almost a century, mainly because it is practical: it's a small animal, with a short life cycle of just two weeks, and is cheap and easy to keep large numbers. Mutant flies, with defects in any of several thousand genes are available, and the entire genome has recently been sequenced. See mutant fruit flies: Terminology Wild-type - flies that have the "normal" characteristics, red eyes, normal length wing and brown bodies. Mutant flies - any variation from the wild type. Mutant alleles can be carried on autosomes or sex chromosomes. Genetic Notation Mutant flies are given names that generally denote the type of mutation the fly exhibits. For example, the mutant "ebony" has a much darker body than the wild type fly. Each mutation is also given a letter code. Thus, in the case of ebony, the code is a lower case e. The wild type fly can be denoted by a superscript + over the mutant letter code. For example, e +
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