Keywords: supergene

Iterative evolution of supergene-based social polymorphism in ants

T. Kay, Q. Helleu and L. Keller,  Philos Trans R Soc Lond B Biol Sci,  377:20210196. 2022.
Species commonly exhibit alternative morphs, with individual fate being determined during development by either genetic factors, environmental cues or a combination thereof. Ants offer an interesting case study because many species are polymorphic in their social structure. Some ...
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Unbalanced selection: the challenge of maintaining a social polymorphism when a supergene is selfish

A. G. Tafreshi, S. P. Otto and M. Chapuisat,  Philos Trans R Soc Lond B Biol Sci,  377:20210197. 2022.
Supergenes often have multiple phenotypic effects, including unexpected detrimental ones, because recombination suppression maintains associations among co-adapted alleles but also allows the accumulation of recessive deleterious mutations and selfish genetic elements. Yet, ...
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Supergene potential of a selfish centromere

F. Finseth, K. Brown, A. Demaree and L. Fishman,  Philos Trans R Soc Lond B Biol Sci,  377:20210208. 2022.
Selfishly evolving centromeres bias their transmission by exploiting the asymmetry of female meiosis and preferentially segregating to the egg. Such female meiotic drive systems have the potential to be supergenes, with multiple linked loci contributing to drive costs or ...
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Epistatic selection on a selfish Segregation Distorter supergene: drive, recombination, and genetic load

B. Navarro-Dominguez, C.-H. Chang, C. L. Brand, C. A. Muirhead, D. C. Presgraves and A. M. Larracuente,  eLife,  11:e78981. 2022.
In this work, we investigate the evolution and genomic consequences of an autosomal, multilocus, male meiotic drive system, Segregation Distorter (SD) in the fruit fly, Drosophila melanogaster. In African populations, the predominant SD chromosome variant, SD-Mal, is ...
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Maternal effect killing by a supergene controlling ant social organization

A. Avril, J. Purcell, S. Béniguel and M. Chapuisat,  Proceedings of the National Academy of Sciences,  2020.
Supergenes are clusters of linked loci producing complex alternative phenotypes. In a series of experiments, we demonstrate that a supergene controlling ant social organization distorts Mendel’s laws to enhance its transmission to adult offspring. One supergene haplotype is ...
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