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ZW, XY, and yet ZW: Sex chromosome evolution in snakes even more complicated

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985904%3A_____%2F18%3A00506460" target="_blank" >RIV/67985904:_____/18:00506460 - isvavai.cz</a>

  • Alternative codes found

    RIV/00216208:11310/18:10385238

  • Result on the web

    <a href="https://asep.lib.cas.cz/arl-cav/cs/csg/?repo=crepo1&key=13246662712" target="_blank" >https://asep.lib.cas.cz/arl-cav/cs/csg/?repo=crepo1&key=13246662712</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1111/evo.13543" target="_blank" >10.1111/evo.13543</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    ZW, XY, and yet ZW: Sex chromosome evolution in snakes even more complicated

  • Original language description

    Snakes are historically important in the formulation of several central concepts on the evolution of sex chromosomes. For over 50 years, it was believed that all snakes shared the same ZZ/ZW sex chromosomes, which are homomorphic and poorly differentiated in basal snakes such as pythons and boas, while heteromorphic and well differentiated in advanced (caenophidian) snakes. Recent molecular studies revealed that differentiated sex chromosomes are indeed shared among all families of caenophidian snakes, but that boas and pythons evolved likely independently male heterogamety (XX/XY sex chromosomes). The historical report of heteromorphic ZZ/ZW sex chromosomes in a bold snake was previously regarded as ambiguous. In the current study, we document heteromorphic ZZ/ZW sex chromosomes in a boid snake. A comparative approach suggests that these heteromorphic sex chromosomes evolved very recently and that they are poorly differentiated at the sequence level. Interestingly, two snake lineages with confirmed male heterogamety possess homomorphic sex chromosomes, but heteromorphic sex chromosomes are present in both snake lineages with female heterogamety. We point out that this phenomenon is more common across squamates. The presence of female heterogamety in non-caenophidian snakes indicates that the evolution of sex chromosomes in this lineage is much more complex than previously thought, making snakes an even better model system for the evolution of sex chromosomes.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10613 - Zoology

Result continuities

  • Project

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2018

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Evolution

  • ISSN

    0014-3820

  • e-ISSN

  • Volume of the periodical

    72

  • Issue of the periodical within the volume

    8

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    7

  • Pages from-to

    1701-1707

  • UT code for WoS article

    000441749600012

  • EID of the result in the Scopus database

    2-s2.0-85050640874