摘要
:采用表面铺展法和硝酸银染色技术对 rob( 1 3/1 7)纯合子猪减数分裂的配对行为进行了联会复合体( synaptonemal complex,SC)的电镜观察和分析。结果表明 ,rob( 1 3/1 7)纯合子猪的 SC配对行为正常 ,未见三价体和侧生组分形成。SC的形成开始于偶线期 ,成熟于粗线期 ,解体于双线期。在减数分裂前期 ,性染色体轴呈强嗜银性 ,配对明显落后于常染色体。根据减数分裂前期性染色体的形态和行为 ,把性染色体的 SC分为
With a combination of microspreading and silver staining techniques,spermatocyte synaptonemal complexes(SC) of homozygous rob(13/17) pigs which born to boar(XY) and sow(XX) of 2n=37,rob(13/17) were observed by electronic microscope.The results showed that the SC of homoygous rob(13/17) pigs were pairing and no trivalent and short SC side arm was found.The autosome synapsis or pairing of autosomal lateral elements started at early,zygoteme phase,completed at pachytene phase and disappeared at diplene phase.Four types of XY pairs have been described.
出处
《中国兽医学报》
CAS
CSCD
北大核心
2000年第6期608-611,共4页
Chinese Journal of Veterinary Science
基金
吉林省自然科学基金!资助项目 ( 96 0 0 40 4)
关键词
猪
联会复合体
纯合子
罗伯逊易位
pig
synaptonemal complex
13/17 robertsonian translocation
homoygous
