多线染色体

中华按蚊多线染色体中X染色体的重新鉴定

Reidentification of the sex chromosome of the salivary gland of Anopheles sinensis

中华按蚊唾腺多线染色体的研究&Ⅰ、X染色体的重新鉴定和湖南省长沙地区中华按蚊唾腺多线染色体图

POLYTENE CHROMOSOMES OF THE SALIVARY GLAND OF ANOPHELES SINENSIS & ⅱ . Re-identification of the X Chromosome and Chromosome Mapping from A.sinensis

果蝇唾腺染色体为多线染色体，其上的每一条横纹带就是一个具有多个相同DNA序列的基因集合体，这个集合体至少相当于一个基因的克隆。

The salivary gland chromosome of Drosophila is one of the polytene chromosomes that have striated bands . Each band is a gene aggregate with the same DNA order . The aggregate equals to a gene cloning at least .

（H♀×Y♂）F1雌蚊卵巢营养细胞多线染色体3R的29区、36区及37区，X性染色体的4区和6区出现恒定不联会。

Ovarian nurse cell polytene chromosomes from ( H × Y ) F1 hybrid females showed constant asynapsis at the 29th , 36th and 37th zones in the chromosome 3R , and at the 4th and 6th zones in the chromosome X.

结果：共观察了365张云南微小按蚊卵巢营养细胞多线染色体标本，其染色体由5臂组成，X染色体最短，为端着丝粒；

[ Results ] : 365 samples of the ovarian nurse cell of Anopheles minimus from Yunnan were observed . The chromosomes consist of one telocentric X chromosome , two submetacentric autosomes 2 and two metacentric autosomes 3.The X is the shortest and the 2R is the longest chromosome .

与广西微小按蚊卵巢营养细胞多线染色体比较，发现有12处差异。

Minimus from Guangxi , difference at 12 positions has been found at the parts of arms in banding sequences .