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Comment
. 2019 Jun 25;116(26):12609-12610.
doi: 10.1073/pnas.1906633116. Epub 2019 Jun 18.

Reply to Wright et al.: How to explain the absence of extensive Y-specific regions in the guppy sex chromosomes

Roberta Bergero  1 , Deborah Charlesworth  2
Affiliations
Comment

Reply to Wright et al.: How to explain the absence of extensive Y-specific regions in the guppy sex chromosomes

Roberta Bergero et al. Proc Natl Acad Sci U S A. .
No abstract available

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Fig. 1.
Fig. 1.
Breakdown of X-Y differentiation during male and female meiosis in guppy sex chromosomes. (Top) Chromosome pair in a male; blue indicates the chromosome carrying the male-determining (maleness) factor. (Middle) A crossover in male meiosis just to the left of the male-determining factor generates a recombinant genotype without the maleness factor. This can enter the female population and recombine further with an X chromosome (shown in red) to produce genotypes shared by both male and female populations. (Bottom) Recombinants produced in female meiosis can reacquire the maleness factor by further recombination events after reentering the male population.
See this image and copyright information in PMC

Comment on

  • Exaggerated heterochiasmy in a fish with sex-linked male coloration polymorphisms.
    Bergero R, Gardner J, Bader B, Yong L, Charlesworth D. Bergero R, et al. Proc Natl Acad Sci U S A. 2019 Apr 2;116(14):6924-6931. doi: 10.1073/pnas.1818486116. Epub 2019 Mar 20. Proc Natl Acad Sci U S A. 2019. PMID: 30894479 Free PMC article.
  • On the power to detect rare recombination events.
    Wright AE, Darolti I, Bloch NI, Oostra V, Sandkam BA, Buechel SD, Kolm N, Breden F, Vicoso B, Mank JE. Wright AE, et al. Proc Natl Acad Sci U S A. 2019 Jun 25;116(26):12607-12608. doi: 10.1073/pnas.1905555116. Epub 2019 Jun 18. Proc Natl Acad Sci U S A. 2019. PMID: 31213531 Free PMC article. No abstract available.

References

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    1. Wright A. E., et al. , Convergent recombination suppression suggests role of sexual selection in guppy sex chromosome formation. Nat. Commun. 8, 14251 (2017). - PMC - PubMed
    1. Lahn B. T., Page D. C., Four evolutionary strata on the human X chromosome. Science 286, 964–967 (1999). - PubMed
    1. Skaletsky H., et al. , The male-specific region of the human Y chromosome is a mosaic of discrete sequence classes. Nature 423, 825–837 (2003). - PubMed
    1. Papadopulos A. S. T., Chester M., Ridout K., Filatov D. A., Rapid Y degeneration and dosage compensation in plant sex chromosomes. Proc. Natl. Acad. Sci. U.S.A. 112, 13021–13026 (2015). - PMC - PubMed

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