| 西域沙虎的核型分析 |
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| 引用本文： | 龚大洁 苏秀芳. 西域沙虎的核型分析[J]. 甘肃科学学报, 1994, 6(2): 41-45 |
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| 作者姓名： | 龚大洁 苏秀芳 |
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| 作者单位： | 西北师范大学生物系，兰州第二中学 |
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| 摘 要： | 本文报导的西域沙虎（Ｔｅｒａｔｏｓｃｉｎｃｕｓｐｒｚｅｗａｌｓｋｉｉ）核型为２ｎ＝３６，由一对（１）亚端部着丝点染色体、１２对（２－１３）端部着丝点染色体及５对（１４－１８）不能明显确定着丝点位置的染色体组成。染色体均无明显的界线，不能象一般爬行类那样划分出大染色体和小染色体，这与壁虎科其它种类相一致，只是中间着丝点及亚中间着丝点染色体缺乏，故尔染色体臂数较少，另外染色体数目也较一般壁虎科种类少，表明沙虎与壁虎间既有联系、又具有一定的差异性。
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| 关 键 词： | 爬行纲 壁虎科 西域沙虎 核型 |
ANALYSIS OF THE KARYOTYPES OF TERATOSCINCUS PRZEWALSKII |
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| Gong Dajie,Su Xiufang. ANALYSIS OF THE KARYOTYPES OF TERATOSCINCUS PRZEWALSKII[J]. Journal of Gansu Sciences, 1994, 6(2): 41-45 |
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| Authors: | Gong Dajie Su Xiufang |
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| Abstract: | In this paper,the karyotypes of Teratoscincus przewalskii(Reptilia:Sauria:Gekkonidae)from Dunhuang,Gansu,were studied by colchicine-hypotonic-air drying technique. Thediploid chromosome number is 2n=36 and is composed of 18 pairs of homogeneous chromosomes.Their size decreased successively and could not be divided distinctly into macro-and micro-chromosomes as of the karyotypes found in Gekkonidae,All the chomosomes are telocentric ex-cept the first pair which is subtelocentric. Hetermorphic sex chromosome were not observed inthis work. |
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| Keywords: | Reptilia Gekkonidae Teratoscincus Przewalskii karyotype evolution |
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