转座子 是染色体上一段 可复制、移动的 DNA 片段。 当转座子插入到某个功能基因内部时,就会引起该基因的失活, 当转座子再次转座或切离这一位点时,失活基因的功能又可得到恢复。
A.
正确
B.
错误
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案:
举一反三
【单选题】Your network contains 10 servers that run Windows Server 2008 R2 Enterprise. The servers are configured as shown in the following table. Server1 and Server2 are members of the same failover cluster. B...
【单选题】...I had the pleasure of working directly with Tom during his time as a salesperson at Unicom Inc., and his tremendous abilities never ceased to amaze me. ...With his abilities, adaptability , a...
【单选题】You are having lunch with a client who suddenly who suddenly asks you, “I noticed that you studied risk. To me, risk is when bad stuff can happen. Can you tell me, what is your definition of risk?” As...
A.
Risk is the source or cause of a financial loss or cost
B.
Risk is a condition that increases the probability of a loss
C.
Risk is the size of a loss or cost; if a cost is greater, then it’s risk is greater
D.
Risk is the variability of adverse outcomes that are unexpected
【简答题】Choose the words or phrases from the box to complete the sentences. A. appraisal B. bonus C. approve D. allocates tasks E. delegate F. promoted G. perfo...