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We talked about mitosis last time; it's described more completely in the chapter, where two cells are formed from one.
我们上节课说到过有丝分裂,在那一章里更详细的阐释了,细胞是怎么由一生二的
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But they had several other books that we now call the Apocrypha, such as Judith or Tobit or the 1 and 2 Maccabees.
但他们也有我们现在称作伪经的书，比如朱迪丝书，托比特书和马卡比一书二书。
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That's shown schematically here, let me talk about the bottom diagram first, which shows the process of mitosis.
在此我们图解了这一过程,我先从下面图表里的,有丝分裂过程讲起
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I might have a photograph of my friend Ruth.
我有一张我朋友露丝的照片
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Toni Morrison was speaking for black Southerners in that, I think, fantastic line in her novel Beloved which I know many of you've read because it's taught all the time but there's that marvelous little exchange at one point between Paul D and Sethe.
托尼.莫里森藉由她的小说《宠儿》中,用一句绝妙的句子表达了南方黑人的心声,我知道很多人都已经读过《宠儿》,因为这本书一直被当做教材,不过小说中男女主人公保罗和塞丝,有这么一小段触人心弦的对话
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Mitosis is an orderly sequence of events by which one parent cell becomes two daughter cells.
有丝分裂是指一个亲代细胞,变为两个子细胞的有序的过程
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Mitosis is one event that happens during this larger event called the cell cycle.
有丝分裂就是发生在,较大的细胞周期中的一个小一点的环节
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It's time for you to reproduce', and so the cellular response would be mitosis.
该是复制的时候了",细胞就开始进行有丝分裂
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When I talked about mitosis, I talked about cells making perfect copies of each other, so each parent cell becoming two daughter cells that are the same.
我讲有丝分裂的时候,谈到过细胞能够完美的复制自己,母细胞分裂成为,两个完全一样的子细胞
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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
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They're not chromosomal differences because this is the ordinary process of mitosis.
它们的染色体没有任何变化,因为这是正常的有丝分裂过程
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It's usually shown like a clock is shown here, where time 0, which is at the top here is right at the end of mitosis where you have two new cells that are formed.
通常会用一个类似时钟的图来图示,0时刻,在最上端 为上次有丝分裂终点,代表两个新细胞刚刚形成
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That's one of the properties of mitosis, that the DNA gets completely duplicated during the S phase, during DNA synthesis phase.
有丝分裂的一个特征,就是DNA在S期内完全复制,S期就是DNA合成期
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If mitosis occurs the way that it's supposed to, the DNA that's in each of these cells is the same.
如果有丝分裂的过程按部就班地进行,那所有细胞的DNA都是相同的
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Several things happen during mitosis, first, when a cell enters the process of mitosis it already has twice the DNA that it needs.
有丝分裂中有几个重要的步骤,首先,当细胞进入有丝分裂过程,细胞中已含有两倍于其正常所需的DNA
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If I followed one of them it is in a phase that's called G1 first and this is a resting phase before it enters the process of synthesizing new DNA in preparation for another round of mitosis.
如果我们跟随一个细胞前进,首先进入G1期,这是一段静息期,之后进入,合成新DNA的S期,为下一轮有丝分裂做准备
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