Non-Homologous Sex Chromosomes in Two Geckos (Gekkonidae: Gekkota) with Female Heterogamety

被引：19

作者：

Matsubara, Kazumi ^{[1
]}

Gamble, Tony ^{[3
,4
]}

Matsuda, Yoichi ^{[5
]}

Zarkower, David ^{[3
]}

Sarre, Stephen D. ^{[1
]}

Georges, Arthur ^{[1
]}

Graves, Jennifer A. Marshall ^{[1
,2
]}

Ezaz, Tariq ^{[1
]}

机构：

[1] Univ Canberra, Inst Appl Ecol, Canberra, ACT 2601, Australia

[2] La Trobe Univ, Sch Life Sci, Melbourne, Vic, Australia

[3] Univ Minnesota, Dept Genet Cell Biol & Dev, Minneapolis, MN USA

[4] Univ Minnesota, Bell Museum Nat Hist, Minneapolis, MN USA

[5] Nagoya Univ, Grad Sch Bioagr Sci, Dept Appl Mol Biosci, Lab Anim Genet, Nagoya, Aichi 4648601, Japan

来源：

CYTOGENETIC AND GENOME RESEARCH | 2014年 / 143卷 / 04期

基金：

美国国家科学基金会; 澳大利亚研究理事会;

关键词：

Chromosome paint; Cytogenetics; FISH; Homology; Reptilia; DETERMINING MECHANISMS; DIFFERENT ORIGINS; EVOLUTION; HOMOLOGY; REPTILIA; SQUAMATA; INSIGHTS; BIRDS; ZW; PHYLOGENY;

D O I：

10.1159/000366172

中图分类号：

Q2 [细胞生物学];

学科分类号：

071009 ; 090102 ;

摘要：

Evaluating homology between the sex chromosomes of different species is an important first step in deducing the origins and evolution of sex-determining mechanisms in a clade. Here, we describe the preparation of Z and W chromosome paints via chromosome microdissection from the Australian marbled gecko (Christinus marmoratus) and their subsequent use in evaluating sex chromosome homology with the ZW chromosomes of the Kwangsi gecko (Gekko hokouensis) from eastern Asia. We show that the ZW sex chromosomes of C. marmoratus and G. hokouensis are not homologous and represent independent origins of female heterogamety within the Gekkonidae. We also show that the C. marmoratus Z and W chromosomes are genetically similar to each other as revealed by C-banding, comparative genomic hybridization, and the reciprocal painting of Z and W chromosome probes. This implies that sex chromosomes in C. marmoratus are at an early stage of differentiation, suggesting a recent origin. (C) 2014 S. Karger AG, Basel

引用

页码：251 / 258

页数：8

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