HOMEOTIC GENES AND THE REGULATION AND EVOLUTION OF INSECT WING NUMBER

被引：160

作者：

CARROLL, SB ^{[1
]}

WEATHERBEE, SD ^{[1
]}

LANGELAND, JA ^{[1
]}

机构：

[1] UNIV WISCONSIN,MADISON,WI 53706

来源：

NATURE | 1995年 / 375卷 / 6526期

关键词：

D O I：

10.1038/375058a0

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

THE evolution of wings catalysed the radiation of insects which make up some 75 per cent of known animals, Fossil evidence suggests that wings evolved from a segment of the leg(1) and that early pterygotes bore wings on all thoracic and abdominal segments(2). The pterygote body plan subsequently diverged producing orders bearing three, two or just one pair of thoracic wings. We have investigated the role of homeotic genes in pterygote evolution by examining their function in Drosophila wing development and their expression in a primitive apterygote. Wing formation is not promoted by any homeotic gene, but is repressed in different segments by different homeotic genes, We suggest here that wings first arose without any homeotic gene involvement in an ancestor with a homeotic 'groundplan' similar to modern winged insects and that wing formation subsequently fell under the negative control of individual homeotic genes at different stages of pterygote evolution.

引用

页码：58 / 61

页数：4

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