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HIGH SCHOOL

Biology

Science Experiments

Basic Biology

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Biology II: Mouse, Zebrafish, and Chick

Chick Egg Incubation and Shell Windowing

Description

Chicken eggs and chicks are useful in research on vertebrate development, neuroscience, tumor biology, and virus growth. They are also practical to work with because eggs can be bought from outside suppliers and the setup needs very little special equipment. Even so, normal embryo development depends on proper handling.

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Transcript

鸡胚胎是研究脊椎动物早期发育的一个极佳模型,部分原因是它们价格低廉且容易保存。不像其它的模式生物需要在实验室里培养,受精的鸡蛋可以从实验室以外的商家购买得到。此外,保存和操作鸡蛋几乎不需要特殊的设备。本短片将全面介绍鸡蛋的获取和保存、操作发育中胚胎的基本技术、以及这些方法的一些实际应用。

在我们讨论实验室里对鸡的操作前,先来看一下在家里母鸡是如何看护它们的鸡蛋。尽管鸡蛋在生出前已经受精,但如果它们被暴露在外面比较寒冷的温度时,其发育会停止。在大约生出12个鸡蛋之后,母鸡会坐在鸡窝上使胚胎继续发育。在孵育过程中,母鸡会翻动鸡蛋使得它们受热均匀,并防止胚胎粘在蛋壳上。如果一切顺利,21天之后...