Related Experiment Video
Updated: Jul 17, 2026

03:58
High Throughput Assay to Examine Egg-Laying Preferences of Individual Drosophila melanogaster
Published on: March 24, 2016
A Study of Frequency-Dependent Selection Observed in the Esterase-6 Locus of DROSOPHILA MELANOGASTER Using a
1Department of Zoology, University of Texas at Austin, Austin, Texas 78712.
Genetics
|May 1, 1971
Abstract
No abstract available in PubMed .
Related Concept Videos
Frequency-dependent Selection
When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.Positive Frequency-Dependent SelectionIn positive...
Types of Selection
Natural selection influences the frequencies of particular alleles and phenotypes within populations in several different ways. Primarily, natural selection can be directional, stabilizing, or disruptive. Directional selection favors one extreme trait and shifts the population towards that phenotype while selecting against individuals displaying alternate traits. Stabilizing selection favors an intermediate trait with a narrow range of variation. Deviation from the optimal phenotype towards an...

