相关实验视频
Updated: Apr 13, 2026

08:41
Quantifying Abdominal Pigmentation in Drosophila melanogaster
Published on: June 1, 2017
9.6K
在Drosophila的两个生殖层中,Ultrabithorax的差异调节
Cell
|May 20, 1988
概括
研究人员确定了调节性DNA序列,可以控制Drosophila.中Ultrabithorax (Ubx) 基因. 这些序列确保了特定胚胎组织的适当基因表达,揭示了对发育基因调节的见解.
科学领域:
- 发育生物学是发展生物学.
- 遗传学 是一个遗传学.
- 分子生物学分子生物学
背景情况:
- 家庭基因Ultrabithorax (Ubx) 在Drosophila发育中起着至关重要的作用,在内脏间皮,外皮和体内间皮中具有特定的表达模式.
- 了解控制Ubx表达的cis作用调节序列是破译发育模式的关键.
研究的目的:
- 鉴定和描述drosophila胚胎中负责Ultrabithorax (Ubx) 基因精确空间表达的cis作用调节序列.
- 研究Ubx表达模式与外皮内嵌基因之间的关系.
主要方法:
- 利用链接β-银酸酶基因记者系统来绘制调节序列的地图.
- 分析了野生类型和突变型 (Haltere-mimic) Drosophila 胚胎中的 Ubx 表达模式.
- 调查了Ubx表达对UbxRNA领导者内嵌入的函数和序列的依赖性.
主要成果:
- 局部上游序列对于内脏中皮的正确Ubx表达至关重要.
- 在外皮中,Ubx表达表现出一种特征性模式,依赖于嵌入式 (en) 函数和UbxRNA领导序列.
- 从UbxRNA领导者下游的序列参与限制外皮中的细分表达.
结论:
- 特定的cis作用调节元件控制不同Drosophila胚胎组织中Ultrabithorax (Ubx) 的复杂表达模式.
- 在UbxRNA领导者中的嵌入基因和序列,以及下游序列,在调节ectoderm中的Ubx细分表达方面发挥着关键作用.
相关概念视频
The Ratio of X Chromosome to Autosomes
10.1K
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...
Normal male Drosophila has a ratio of one X chromosome to two sets of autosomes. In contrast, normal female...
10.1K
Dosage Compensation
7.9K
In animals, gender is determined by the number and type of sex chromosome. For example, human females have two X chromosomes, and males have one X and one Y chromosome, whereas C.elegans with one X chromosome is a male, and the one with two X chromosomes is a hermaphrodite.
In addition to sexual development, the X chromosome has genes involved in autosomal functions such as brain development and the immune system. Therefore, males and females with distinct numbers of X chromosomes will...
In addition to sexual development, the X chromosome has genes involved in autosomal functions such as brain development and the immune system. Therefore, males and females with distinct numbers of X chromosomes will...
7.9K

