Identification of a Cis-Sex Chromosome Transition in Banded Geckos (Coleonyx, Eublepharidae, Gekkota)

Authors

Shannon E. Keating, Marquette University
Eli Greenbaum, University of Texas - El Paso
Jerry D. Johnson, University of Texas - El Paso
Tony Gamble, Marquette UniversityFollow

Document Type

Article

Publication Date

12-2022

Publisher

Wiley

Source Publication

Journal of Evolutionary Biology

Source ISSN

1010-061x

Abstract

Sex-determination systems are highly variable amongst vertebrate groups, and the prevalence of genomic data has greatly expanded our knowledge of how diverse some groups truly are. Gecko lizards are known to possess a variety of sex-determination systems, and each new study increases our knowledge of this diversity. Here, we used RADseq to identify male-specific markers in the banded gecko Coleonyx brevis, indicating this species has a XX/XY sex-determination system. Furthermore, we show that these sex-linked regions are not homologous to the XX/XY sex chromosomes of two related Coleonyx species, C. elegans and C. mitratus, suggesting that a cis- sex chromosome turnover—a change in sex chromosomes without a concomitant change in heterogamety—has occurred within the genus. These findings demonstrate the utility of genome-scale data to uncover novel sex chromosomes and further highlight the diversity of gecko sex chromosomes.

Comments

Accepted version. Journal of Evolutionary Biology, Vol. 35, No. 12 (2022): 1675-1682. DOI. © 2022 Wiley. Used with permission.

Recommended Citation

Keating, Shannon E.; Greenbaum, Eli; Johnson, Jerry D.; and Gamble, Tony, "Identification of a Cis-Sex Chromosome Transition in Banded Geckos (Coleonyx, Eublepharidae, Gekkota)" (2022). Biological Sciences Faculty Research and Publications. 919.
https://epublications.marquette.edu/bio_fac/919