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The migration of a mutant gene into isolated populations of Drosophila Melanogaster

โœ Scribed by Bruce Wallace

Publisher
Springer Netherlands
Year
1979
Tongue
English
Weight
342 KB
Volume
50
Category
Article
ISSN
0016-6707

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โœฆ Synopsis

Sepia (eyed) D. melanogaster females were allowed to enter 'bottle' populations of wildtype D. melanogaster flies at rare, sporadic intervals. The frequency of sepia-eyed individuals in these populations was determined much more by selective forces than by numbers of immigrant individuals. Populations with no sepia individuals averaged nearly 3 immigrant individuals; those with more than 25% (homozygous) sepia flies averaged about 6 immigrants. After 34 generations, the average frequency of the sepia gene is about 0.28; this may represent the average frequency of any allele introduced into the wildtype populations by these migrant flies.

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