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HIGH SCHOOL

Biology

Science Experiments

Basic Biology

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Biology I: yeast, <em>Drosophila</em> and <em>C. elegans</em>

Collecting Fly Embryos and Larvae for Study

Description

Drosophila melanogaster embryos and larvae are often collected before biological experiments begin. They develop quickly and are easy to handle, which makes them useful for studies in developmental biology and behavior. Their growth also follows mechanisms that are similar to those in other organisms, including mammals.

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Transcript

黑腹果蝇的卵和幼虫易于操作,并且它们的发育有着和其他生物,包括哺乳动物,同样的调控机理。学习收获和准备卵和幼虫是从行为生物学到发育生物学的众多实验过程中的第一步。本短片将讲述 采集和收获黑腹果蝇卵和幼虫的基本方法,也是使用这个通用模式生物的关键步骤。

对果蝇卵的研究让我们对 基因调控发育的方式有了全面了解,包括在卵母细胞中呈梯度表达的mRNA,及决定前-后轴分节的形体结构的基因。其中一些基因,如同源异形盒基因在果蝇和哺乳动物中高度保守。 果蝇卵营养丰富的特性使得它们能够经受恶劣环境和化学物质,因而及其方便将它们用于研究。

一只雌性果蝇受精后每天可产多达10...

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