Strong conservation of the bird Z chromosome in reptilian genomes is revealed by comparative painting despite 275 million years divergence

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F11%3A10108305" target="_blank" >RIV/00216208:11310/11:10108305 - isvavai.cz</a>

Alternative codes found

RIV/67985904:_____/11:00374745

Result on the web

<a href="http://dx.doi.org/10.1007/s00412-011-0322-0" target="_blank" >http://dx.doi.org/10.1007/s00412-011-0322-0</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00412-011-0322-0" target="_blank" >10.1007/s00412-011-0322-0</a>

Result language

angličtina

Original language name

Strong conservation of the bird Z chromosome in reptilian genomes is revealed by comparative painting despite 275 million years divergence

Original language description

The divergence of lineages leading to extant squamate reptiles (lizards, snakes, and amphisbaenians) and birds occurred about 275 million years ago. Birds, unlike squamates, have karyotypes that are typified by the presence of a number of very small chromosomes. Hence, a number of chromosome rearrangements might be expected between bird and squamate genomes. We used chromosome-specific DNA from flow-sorted chicken (Gallus gallus) Z sex chromosomes as a probe in cross-species hybridization to metaphase spreads of 28 species from 17 families representing most main squamate lineages and single species of crocodiles and turtles. In all but one case, the Z chromosome was conserved intact despite very ancient divergence of sauropsid lineages. Furthermore, the probe painted an autosomal region in seven species from our sample with characterized sex chromosomes, and this provides evidence against an ancestral avian-like system of sex determination in Squamata. The avian Z chromosome synteny is

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

EG - Zoology

OECD FORD branch

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Project

<a href="/en/project/GAP506%2F10%2F0718" target="_blank" >GAP506/10/0718: Evolution of sex determining systems in squamate reptiles: molecular cytogenetic test of multiple independent origins of sex chromosomes</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2011

Confidentiality

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

Name of the periodical

Chromosoma

ISSN

0009-5915

e-ISSN

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Volume of the periodical

120

Issue of the periodical within the volume

5

Country of publishing house

DE - GERMANY

Number of pages

14

Pages from-to

455-468

UT code for WoS article

000294956500003

EID of the result in the Scopus database

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