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Updated: Jul 10, 2026

Protocols for Visualizing Steroidogenic Organs and Their Interactive Organs with Immunostaining in the Fruit Fly Drosophila melanogaster
12:10

Protocols for Visualizing Steroidogenic Organs and Their Interactive Organs with Immunostaining in the Fruit Fly Drosophila melanogaster

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在Drosophila胚胎中期发育过程中,ecdysone信号的重要作用

Tatiana Kozlova1, Carl S Thummel

  • 1Howard Hughes Medical Institute, Department of Human Genetics, University of Utah School of Medicine, 15 North 2030 East Room 5100, Salt Lake City, UT 84112-5331, USA. tkozlova@cas.usf.edu

Science (New York, N.Y.)
|September 6, 2003
PubMed
概括

胚胎的ecdysone脉冲,受调的Ecr-USP受体在amnioserosa,对于Drosophila生殖带收缩和头部卷入至关重要,协调早期发育.

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The Ratio of X Chromosome to Autosomes02:45

The Ratio of X Chromosome to Autosomes

In most organisms, sex is determined by the ratio of X and Y chromosomes. However, in some organisms, such as Drosophila and C.elegans, sex is determined by the ratio of the number of X chromosomes to the number of sets of autosomes. The Y chromosome in Drosophila is active but does not determine sex. It contains genes responsible for the production of sperms in adult flies.  
Normal male Drosophila has a ratio of one X chromosome to two sets of autosomes. In contrast, normal female Drosophila...