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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F18%3A10385238" target="_blank" >RIV/00216208:11310/18:10385238 - isvavai.cz</a>

Alternative codes found

RIV/67985904:_____/18:00506460

Result on the web

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

DOI - Digital Object Identifier

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

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 &quot;basal&quot; snakes such as pythons and boas, while heteromorphic and well differentiated in &quot;advanced&quot; (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

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10602 - Biology (theoretical, mathematical, thermal, cryobiology, biological rhythm), Evolutionary biology

Project

<a href="/en/project/GJ17-22141Y" target="_blank" >GJ17-22141Y: Evolution of sex chromosomes in toxicoferan reptiles</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

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

Name of the periodical

Evolution; international journal of organic 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