Synaptonemal complex analysis of an autosomal trisomy in the horse
作者:
M.M. Power,
I. Gustavsson,
M. Świtoński,
L. Plöen,
期刊:
Cytogenetic and Genome Research
(Karger Available online 1992)
卷期:
Volume 61,
issue 3
页码: 202-207
ISSN:1424-8581
年代: 1992
DOI:10.1159/000133408
出版商: S. Karger AG
数据来源: Karger
摘要:
Synaptonemal complex analysis by electron microscopy of a trisomy 28 in a male horse demonstrated a trivalent or a bivalent plus a univalent in primary spermatocytes. Two of the chromosomes making up the trivalent were, most often, completely paired with each other and only partially paired or associated with the third one. Half of the spermatocytes analysed demonstrated heterologous pairing or association between the free axis of the trivalent and the sex bivalent. The pairings remained, to a large extent, into diakinesis-metaphase I. In most pachytene cells one autosomal bivalent showed proximal asynapsis and paired often, heterologously, with the trivalent or the sex bivalent. The horse demonstrated azoospermy, which was due, at least in part, to degeneration at both the spermatocyte and spermatid levels.
点击下载:
PDF
(1312KB)
返 回