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
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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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
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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