Selman G G
Institute of Animal Genetics, University of Edinburgh, West Mains Road, Edinburgh EH 9 3JN, Scotland.
Dev Growth Differ. 1982;24(1):1-6. doi: 10.1111/j.1440-169X.1982.00001.x.
Eggs of Triturus alpestris were horizontally compressed at times before first and second cleavage in an experiment designed to measure the time at which the mitotic apparatus determines the direction of the subsequent cleavage furrow. The results showed that furrow determination was completed 0.46 Dettlaff units before the onset of furrowing. When a comparison was made of the times of furrow determination before cleavage in eggs of different animal groups using Dettlaff units, the results supported the idea that preparations for furrowing proceed differently in echinoderm eggs from eggs of sturgeon and amphibia.
在一项旨在测量有丝分裂器确定后续卵裂沟方向的时间的实验中，高山蝾螈的卵在第一次和第二次卵裂之前有时会受到水平挤压。结果表明，在卵裂沟开始形成前0.46个德特拉夫单位时，卵裂沟的确定就已完成。当使用德特拉夫单位对不同动物类群的卵在卵裂前确定卵裂沟的时间进行比较时，结果支持了这样一种观点，即棘皮动物卵形成卵裂沟的准备过程与鲟鱼和两栖动物的卵不同。
