An asymmetrical division is not like that, it's when a parent cell forms two cells that are different in some way.

而不对称分裂就不是这样,当母细胞分裂为两个子细胞时,会有一些不同

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The regions that are necessary for describing what the protein is like are called exons, the regions that are not are called introns.

因此我们把编码蛋白质的区域,称为外显子,而把不参与编码蛋白的区域称为内含子

耶鲁公开课 - 生物医学工程探索课程节选

There are encoding regions called exons and those are interrupted by non-coding regions called introns.

编码蛋白质的部分叫外显子,外显子被不编码蛋白质的内含子打断

耶鲁公开课 - 生物医学工程探索课程节选

The size of the cells could be different; maybe mitosis is asymmetrical in some way so that one of the cells ends up being bigger than the other.

细胞大小可能会不同,也许有丝分裂的过程是不对称的,致使子细胞一个大一个小

耶鲁公开课 - 生物医学工程探索课程节选