CHROMOSOMAL DIFFERENTIATION IN 2 SPECIES OF AEDES AND THEIR HYBRIDS REVEALED BY GIEMSA C-BANDING
CHROMOSOMAL DIFFERENTIATION IN 2 SPECIES OF AEDES AND THEIR HYBRIDS REVEALED BY GIEMSA C-BANDING
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DOI：
10.1007/bf00327052
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发表时间：
1977-01-01
期刊：
影响因子：
1.6
通讯作者：
RAI, KS
中科院分区：
文献类型：
--
作者：
MOTARA, MA;RAI, KS
Giemsa C-带带型在2个种属（spp.）埃及伊蚊（Aedes aegypti）和A. mascarensis，它们的杂种和回交后代显示出性染色体对的差异。以.埃及伊蚊的雌性决定染色体（即m染色体）在着丝粒区有一条明显的带，在一臂上有一条明显的带，雄性决定染色体（即M染色体）无带。A. aegypti雌性和A.马斯卡伦斯雄性显示出有趣的，尽管是意想不到的结果。儿子和女儿的闰带都受到抑制。当这些F1代的后代与A.埃及女性，一部分男性发展成为两性人。这些雌雄间性的后代在带型方面不同于正常的雄性。在互交（A. mascarensis female（. A. aegypti雄性），F1和回交后代产生了预期的C-带型。本文还讨论了A.埃及m染色体及其相关的遗传调控进行了讨论。
Giemsa C-banding patterns in 2 spp. of mosquitoes, Aedes aegypti and A. mascarensis, their hybrids and backcross progeny revealed differences in the sex chromosome pair. In A. aegypti, the female determining or the m chromosome in both males and females shows a conspicuous band in the centromere region and another band in 1 arm. The male determining or the M chromosome is devoid of any bands. Progeny of crosses involving A. aegypti females and A. mascarensis males showed interesting albeit unexpected results. The intercalary band was suppressed in both sons and daughters. When such F1 sons were backcrossed to A. aegypti females, a proportion of males developed into intersexes. These intersex progeny differed from the normal males in terms of their banding pattern. In the reciprocal cross (A. mascarensis female (.times. A. aegypti male), the F1 and the backcross progeny yielded the expected C-banding patterns. The implications of the reversible expression of the intercalary band on the A. aegypti m chromosome and its relevance to genetic regulation are discussed.