What question did this study set out to answer?

To examine the theoretical foundation of balanced polymorphisms and extend evolutionary dynamics beyond classical single-locus systems to complex, multi-locus traits.

December 1, 1960Evolution

The Evolutionary Dynamics of Complex Polymorphisms,,

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Authors

RLRichard C LewontinUniversity of California, Riverside KKKenichi KojimaYokohama City University

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Implication

Theoretical analysis reveals multi-locus balanced polymorphisms across diverse animal species, indicating evolutionary dynamics require interactions beyond single-locus models.

Key Points

To examine the theoretical foundation of balanced polymorphisms and extend evolutionary dynamics beyond classical single-locus systems to complex, multi-locus traits.
Reviewed foundational single-locus theoretical models established by Sewall Wright and R. A. Fisher alongside classical empirical data from Drosophila pseudoobscura.
Analyzed documented multi-locus systems, including chromosomal inversions in Drosophila robusta and Moraba scurra, Cepaea nemoralis shell coloration, and butterfly mimicry.
Traditional models of natural selection on single-locus systems account primarily for intra-locus and inter-allelic interactions, specifically additivity and dominance.
Empirical evidence across multiple animal species demonstrates that stable polymorphisms regularly span multiple Mendelian units, demanding broader multi-locus evolutionary models.

Cite This Study

Lewontin et al. (1960) studied this question.

synapsesocial.com/papers/6a1a91c849c6765e3885a3ff https://doi.org/10.1111/j.1558-5646.1960.tb03113.x

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Implication

Theoretical analysis reveals multi-locus balanced polymorphisms across diverse animal species, indicating evolutionary dynamics require interactions beyond single-locus models.

The Evolutionary Dynamics of Complex Polymorphisms,,

Discussion

Member takes

Implication

Key Points

Cite This Study

The Evolutionary Dynamics of Complex Polymorphisms,,

Discussion

Member takes

Implication

Key Points

Cite This Study

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