A Study Of Inheritable Traits In Fruit Flies

The Drosophila melanogaster, more commonly known as the fruit fly, is a
popular species used in genetic experiments. In fact, Thomas Hunt Morgan began
using Drosophila in the early 1900’s to study genes and their relation to
certain chromosomes(Biology 263). Scientists have located over 500 genes on the
four chromosomes in the fly. There are many advantages in using Drosophila for
these types of studies. Drosophila melanogaster can lay hundreds of eggs after
just one mating, and have a generation time of two weeks at 21°C(Genetics:
Drosophila Crosses 9). Another reason for using fruit flies is that they mature
rather quickly and don’t require very much space. Drosophila ...

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from the mating of a male homozygous wild-type eyed fly with a female
homozygous sepia eyed fly. Males and females are distinguished by differences in
body shape and size. Males have a darker and rounder abdomen in comparison to
females, which are more pointed. Another difference occurs on the forelegs of
the flies—males have a small bump called sex combs. At week 0, after being
anaesthitized by fly-nap, three males and three females were identified under a
dissecting microscope and placed ...

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Added: 12/25/2003 07:17:23 AM
Category: Science & Nature
Words: 1423
Pages: 6

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