| 1. | We cannot be certain that gonium, pandonina, eudonna, and pleodorina represent stages in the evolution of multicellular volvox from unicellular chlamydomonas .
我们不能肯定盘藻、实球藻、空球藻和杂球藻代表从单细胞衣藻到多细胞因藻的各进化阶段。
|
| 2. | Apparently , a mutation in this gene ? or , more probably , in the control system that activates it ? gave rise to volvox
显然这个基因的突变，或更可能是激活这个基因的控制机制的突变产生了团藻。
|
| 3. | Apparently , a mutation in this gene ? or , more probably , in the control system that activates it ? gave rise to volvox
显然这种基因的突变? ?或者可能是激活基因的调节系统的突变? ?出现在了团藻中。
|
| 4. | When that happened , individual cells could turn their reproductive capacity on or off according to the function they served in volvox ' s body
这个突变让团藻的各个细胞根据自身的角色打开或关闭自己的生殖功能。
|
| 5. | When that happened , individual cells could turn their reproductive capacity on or off according to the function they served in volvox ' s body
因此个体细胞根据他们在团藻中所具有的功能打开或关闭控制繁殖能力的开关。
|
| 6. | But volvox shows the sort of thing to look for : a gene that stops reproduction in single - celled creatures and has been co - opted to do a new job
但团藻提示了我们应该寻找的东西：即一个能阻止单细胞生物繁殖又被指定了新任务的基因。
|
| 7. | Clearly , volvox evolved from similar algae that exist only as single cells , but until now the genetics of the process have been obscure
显然团藻是从类似的只有单个细胞的藻类进化来的，但这个进化过程的遗传学机理迄今为止还不清楚。
|
| 8. | Clearly , volvox evolved from similar algae that exist only as single cells , but until now the genetics of the process have been obscure
毫无疑问团藻是由类似的只以单细胞形式存在的藻类进化而来，但直到现在这一过程的遗传学原理依然模糊不清。
|
| 9. | An adult volvox consists of around 2 , 000 body cells , whose job is to move the organism around using their flagella , and 16 cells capable of reproducing
一株成年团藻由大约2000个体细胞组成，它们用它们的鞭毛移动整个团藻，而16个细胞具有繁殖功能。
|
| 10. | An adult volvox consists of around 2 , 000 body cells , whose job is to move the organism around using their flagella , and 16 cells capable of reproducing
一个成年的团藻有大约2000个体细胞，它们的功能是控制自己的鞭毛来让整个生物体运动起来，而另有16个细胞是有生殖能力的。
|
您当前位置：