BIVALENT BEHAVIOR IN DROSOPHILA-MELANOGASTER MALES CONTAINING THE IN(1)SC4LSC8RX-CHROMOSOME

被引：9

作者：

AULT, JG ^{[1
]}

LIN, HPP ^{[1
]}

机构：

[1] ARIZONA STATE UNIV, DEPT ZOOL, TEMPE, AZ 85287 USA

来源：

CHROMOSOMA | 1984年 / 90卷 / 03期

关键词：

D O I：

10.1007/BF00292400

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The sex chromosome bivalent was examined in D. melanogaster males possessing the In(1)sc4Lsc8R X chromosome. Three-dimensional reconstructions from electron micrographs of serially cut thin sections were made. A large proportion of the kinetochores of In(1)sc4Lsc8R/Y bivalents did not face opposite poles during metaphase I and anaphase I. In(1)sc4Lsc8R/Y bivalents may have difficulty achieving bipolar stability. Delay in achieving bipolar stability could contribute to the nondisjunctional behavior found in In(1)sc4Lsc8R/Y males.

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页码：222 / 228

页数：7

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