ArticleGenome biology and evolution2020
Guppy Y Chromosome Integrity Maintained by Incomplete Recombination Suppression.
Article in Genome biology and evolution, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.
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Who cites it
22 citing papers in PubMed.
- Conserved sex-biased DNA methylation patterns target key developmental genes and reproductive function in two Poeciliidae species.G3 (Bethesda, Md.) · 2026Article
- Single cell RNA-sequencing reveals no evidence for meiotic sex chromosome inactivation in the threespine stickleback fish.PLoS genetics · 2025Article
- Single cell RNA-sequencing reveals no evidence for meiotic sex chromosome inactivation in the threespine stickleback fish.bioRxiv : the preprint server for biology · 2025Article
- Parsimony and Poeciliid Sex Chromosome Evolution.Genome biology and evolution · 2023Article
- Evolutionary History of the Poecilia picta Sex Chromosomes.Genome biology and evolution · 2023Article
- Comparison of methodological approaches to the study of young sex chromosomes: A case study in Poecilia.Journal of evolutionary biology · 2022Article
- Partial sex linkage and linkage disequilibrium on the guppy sex chromosome.Molecular ecology · 2022Article
- Heterogeneous Evolution of Sex Chromosomes in the Torrent Frog GenusInternational journal of molecular sciences · 2022Article
- Fragile, unfaithful and persistent Ys-on how meiosis can shape sex chromosome evolution.Heredity · 2022Article
- Are plant and animal sex chromosomes really all that different?Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2022Review
- Article
- Evolution of the canonical sex chromosomes of the guppy and its relatives.G3 (Bethesda, Md.) · 2022Article
- Heterogeneous Histories of Recombination Suppression on Stickleback Sex Chromosomes.Molecular biology and evolution · 2021Article
- PromethION Sequencing and Assembly of the Genome of Micropoecilia picta, a Fish with a Highly Degenerated Y Chromosome.Genome biology and evolution · 2021Article
- Characterization of a Sex-Determining Region and Its Genomic Context via Statistical Estimates of Haplotype Frequencies in Daughters and Sons Sequenced in Pools.Genome biology and evolution · 2021Article
- How did the guppy Y chromosome evolve?PLoS genetics · 2021Article
- Extreme Y chromosome polymorphism corresponds to five male reproductive morphs of a freshwater fish.Nature ecology & evolution · 2021Article
- Size Variation of the Nonrecombining Region on the Mating-Type Chromosomes in the Fungal Podospora anserina Species Complex.Molecular biology and evolution · 2021Article
- Divergence and Remarkable Diversity of the Y Chromosome in Guppies.Molecular biology and evolution · 2021Article
- High-resolution characterization of male ornamentation and re-evaluation of sex linkage in guppies.Proceedings. Biological sciences · 2020Article
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3 authors.
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Abstract
The loss of recombination triggers divergence between the sex chromosomes and promotes degeneration of the sex-limited chromosome. Several livebearers within the genus Poecilia share a male-heterogametic sex chromosome system that is roughly 20 Myr old, with extreme variation in the degree of Y chromosome divergence. In Poecilia picta, the Y is highly degenerate and associated with complete X chromosome dosage compensation. In contrast, although recombination is restricted across almost the entire length of the sex chromosomes in Poecilia reticulata and Poecilia wingei, divergence between the X chromosome and the Y chromosome is very low. This clade therefore offers a unique opportunity to study the forces that accelerate or hinder sex chromosome divergence. We used RNA-seq data from multiple families of both P. reticulata and P. wingei, the species with low levels of sex chromosome divergence, to differentiate X and Y coding sequences based on sex-limited SNP inheritance. Phylogenetic tree analyses reveal that occasional recombination has persisted between the sex chromosomes for much of their length, as X- and Y-linked sequences cluster by species instead of by gametolog. This incomplete recombination suppression maintains the extensive homomorphy observed in these systems. In addition, we see differences between the previously identified strata in the phylogenetic clustering of X-Y orthologs, with those that cluster by chromosome located in the older stratum, the region previously associated with the sex-determining locus. However, recombination arrest appears to have expanded throughout the sex chromosomes more gradually instead of through a stepwise process associated with inversions.
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