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ERIC Number: EJ884152
Record Type: Journal
Publication Date: 2010-Jan
Pages: 4
Abstractor: As Provided
Reference Count: 0
ISBN: N/A
ISSN: ISSN-0002-7685
When a Fly Has to Fly to Reproduce: Selection against Conditional Recessive Lethals in "Drosophila"
Plunkett, Andrea D.; Yampolsky, Lev Y.
American Biology Teacher, v72 n1 p12-15 Jan 2010
We propose an experimental model suitable for demonstrating allele frequency change in Drosophila melanogaster populations caused by selection against an easily scorable conditional lethal, namely recessive flightless alleles such as apterous and vestigial. Homozygotes for these alleles are excluded from reproduction because the food source used to establish each generation is accessible only by flight. The observed dynamics of flightless-allele frequencies generally follows the theoretically predicted pattern, with slight deviation toward less intense selection. We also suggest observing selection against flight-independent visible marker alleles in the same population as a meaningful comparison. The proposed experiments can easily be scheduled within one semester, and the expected data provide ample opportunities for discussion of quantitative evolutionary patterns.
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Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: Teachers
Language: English
Sponsor: N/A
Authoring Institution: N/A