ArticlePloS one2007
What causes partial F1 hybrid viability? Incomplete penetrance versus genetic variation.
Article in PloS one, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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Who cites it
17 citing papers in PubMed.
- Article
- Protein Complexes Form a Basis for Complex Hybrid Incompatibility.Frontiers in genetics · 2021Review
- The importance of intrinsic postzygotic barriers throughout the speciation process.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2020Review
- Metapopulation patterns of additive and nonadditive genetic variance in the sea bass (Ecology and evolution · 2017Article
- Spodoptera frugiperda (Lepidoptera: Noctuidae) host-plant variants: two host strains or two distinct species?Genetica · 2015Article
- Article
- Hybrid breakdown in cichlid fish.PloS one · 2015Article
- Article
- Article
- Geographically multifarious phenotypic divergence during speciation.Ecology and evolution · 2013Article
- Fertilisation and early developmental barriers to hybridisation in field crickets.BMC evolutionary biology · 2013Article
- Genetic analysis of post-mating reproductive barriers in hybridizing European Populus species.Heredity · 2011Article
- Interpopulation hybridization results in widespread viability selection across the genome in Tigriopus californicus.BMC genetics · 2011Article
- Article
- Article
- Post-zygotic isolation in cactophilic Drosophila: larval viability and adult life-history traits of D. mojavensis/D. arizonae hybrids.Journal of evolutionary biology · 2009Article
- Accelerated mitochondrial evolution and "Darwin's corollary": asymmetric viability of reciprocal F1 hybrids in Centrarchid fishes.Genetics · 2008Article
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2 authors.
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Abstract
backgroundInterspecific hybrid crosses often produce offspring with reduced but non-zero survivorship. In this paper we ask why such partial inviability occurs. This partial inviability could arise from incomplete penetrance of lethal Dobzhansky-Muller incompatibilities (DMIs) shared by all members of a hybrid cross. Alternatively, siblings may differ with respect to the presence or number of DMIs, leading to genotype-dependent variation in viability and hence non-Mendelian segregation of parental alleles in surviving F1 hybrids. METHODOLOGY/PRINCIPAL
findingsWe used amplified fragment length polymorphisms (AFLPs) to test for segregation distortion in one hybrid cross between green and longear sunfish (Lepomis cyanellus and L. megalotis). Hybrids showed partial viability, and twice as much segregation distortion (36.8%) of AFLPs as an intraspecific control cross (18.8%). Incomplete penetrance of DMIs, which should cause genotype-independent mortality, is insufficient to explain the observed segregation distortion. CONCLUSIONS/SIGNIFICANCE: We conclude that F1 hybrid sunfish are polymorphic for DMIs, either due to sex-linked DMI loci (causing Haldane's Rule), or polymorphic autosomal DMI loci. Because few AFLP markers were sex-linked (2%), the most parsimonious conclusion is that parents may have been heterozygous for loci causing hybrid inviability.
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