Lampbrush chromosomes of the Japanese quail (Coturnix coturnix japonica): A new version of cytogenetic maps

被引：0
作者：
A. A. Daks
S. E. Deryusheva
A. V. Krasikova
A. M. Zlotina
E. R. Gaginskaya
S. A. Galkina
机构：
[1] St. Petersburg State University,Department of Cytology and Genetics
来源：
Russian Journal of Genetics | 2010年 / 46卷
关键词：
Mitotic Chromosome; Japanese Quail; Chicken Genome; Lampbrush Chromosome; Centromere Index;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Avian oocyte chromosomes are transfomed into giant transcriptionally active lampbrush chromosomes (LBCs) at meiosis 1 diplotene. These chromosomes are a convenient tool for high-resulution cytogenetic analysis. Using differential staining with fluorochromes DAPI and CMA3, we have constructed detailed cytological maps for lampbrush macrochromosomes 1–5 and ZW of the Japanese quail Coturnix coturnix japonica. We also performed a comparative analysis of mitotic chromosomes and LBCs corresponding to them. We estimated the decondensation coefficient during LBC formation and determined the centromere indices for mitotic and diplotene chromosomes and thus found that different chromosomes and chromosomal regions demonstrate unequal degrees of decondensation.
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页码：1178 / 1181
页数：3
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