ArticleChromosoma2014
Sex chromosome polymorphism in guppies.
Article in Chromosoma, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.
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Who cites it
32 citing papers in PubMed.
- Genome report: Genome of the Amazon guppy (Poecilia bifurca) reveals conservation of sex chromosomes and dosage compensation.G3 (Bethesda, Md.) · 2025Article
- The next generation of colour pattern genomics.Nature ecology & evolution · 2025Article
- Deep learning reveals the complex genetic architecture of male guppy colouration.Nature ecology & evolution · 2025Article
- Identification of the male-specific region on the guppy Y Chromosome from a haplotype-resolved assembly.Genome research · 2025Article
- A variant W chromosome in Centromochlus heckelii (Siluriformes, Auchenipteridae) and the role of repeated DNA in its heteromorphism.Genetics and molecular biology · 2025Article
- Partial sex linkage and linkage disequilibrium on the guppy sex chromosome.Molecular ecology · 2022Article
- Article
- A large and diverse autosomal haplotype is associated with sex-linked colour polymorphism in the guppy.Nature communications · 2022Article
- Evolution of the canonical sex chromosomes of the guppy and its relatives.G3 (Bethesda, Md.) · 2022Article
- Against the mainstream: exceptional evolutionary stability of ZW sex chromosomes across the fish families Triportheidae and Gasteropelecidae (Teleostei: Characiformes).Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2021Article
- The timing of genetic degeneration of sex chromosomes.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2021Review
- How did the guppy Y chromosome evolve?PLoS genetics · 2021Article
- RADSex: A computational workflow to study sex determination using restriction site-associated DNA sequencing data.Molecular ecology resources · 2021Article
- Amplified Fragments of an Autosome-Borne Gene Constitute a Significant Component of the W Sex Chromosome ofGenes · 2021Article
- Divergence and Remarkable Diversity of the Y Chromosome in Guppies.Molecular biology and evolution · 2021Article
- Locating the Sex Determining Region of Linkage Group 12 of Guppy (G3 (Bethesda, Md.) · 2020Article
- Improved Reference Genome Uncovers Novel Sex-Linked Regions in the Guppy (Poecilia reticulata).Genome biology and evolution · 2020Article
- Sex Chromosome Evolution: So Many Exceptions to the Rules.Genome biology and evolution · 2020Review
- Independent Origin of XY and ZW Sex Determination Mechanisms in Mosquitofish Sister Species.Genetics · 2020Article
- Mapping of the Sex Determining Region on Linkage Group 12 of Guppy (G3 (Bethesda, Md.) · 2019Article
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Sex chromosomes differ from autosomes by dissimilar gene content and, at a more advanced stage of their evolution, also in structure and size. This is driven by the divergence of the Y or W from their counterparts, X and Z, due to reduced recombination and the resulting degeneration as well as the accumulation of sex-specific and sexually antagonistic genes. A paradigmatic example for Y-chromosome evolution is found in guppies. In these fishes, conflicting data exist for a morphological and molecular differentiation of sex chromosomes. Using molecular probes and the previously established linkage map, we performed a cytogenetic analysis of sex chromosomes. We show that the Y chromosome has a very large pseudoautosomal region, which is followed by a heterochromatin block (HCY) separating the subtelomeric male-specific region from the rest of the chromosome. Interestingly, the size of the HCY is highly variable between individuals from different population. The largest HCY was found in one population of Poecilia wingei, making the Y almost double the size of the X and the largest chromosome of the complement. Comparative analysis revealed that the Y chromosomes of different guppy species are homologous and share the same structure and organization. The observed size differences are explained by an expansion of the HCY, which is due to increased amounts of repetitive DNA. In one population, we observed also a polymorphism of the X chromosome. We suggest that sex chromosome-linked color patterns and other sexually selected genes are important for maintaining the observed structural polymorphism of sex chromosomes.
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