开放阅读框(open reading frame,ORF)
开放阅读框(open reading frame,ORF)
开放阅读框(open reading frame,ORF)
第1题
从酵母中克隆到一段DNA序列具有类似原核生物DNA复制起始点的功能,即______。
A.USR(Upstream Replicating Sequence) B.LTR(Long Terminal Sequence)
C.ARS(Autonomously Replicating Sequence)D.ORF(Open Reading Frame)
第2题
A、F= "C:\Sequ.txt":Open F For Input As #1
B、F= "C:\Sequ.txt":Open "F" For Input As #1
C、Open "C:\Sequ.txt" For Output As #1
D、Open C:\Sequ.txt For Output As #1
第3题
The last two sentences of the first paragraph mean that______.
A.a reading speed too slow for a difficult book is just right for a non-serious one
B.a reading speed too slow for a non-serious book may be too fast for a difficult one
C.A reading speed too fast for difficult material is just right for a non-serious book is also too slow for a difficult one
D.A reading speed too slow for a non-serious book is also too slow for a difficult one
第4题
Please open the Letter of Credit promptly at the contract price, () we cannot apply for export licence
A、lest
B、otherwise
C、or
D、and
第6题
A.正确
B.错误
第7题
A. C盘根目录下
B.D盘根目录下
C.Python安装目录下
D.与源文件在相同的目录下
第8题
A.MIPS
B.COG
C.GenBank
D.expasy
E.KEGG
第9题
第10题
一段很清楚的双脱氧测序胶样品如图16-3-26所示,试着阅读一下,依次从胶的顶的方向阅读,这个序列对应的mRNA可能翻译成一个蛋白质,你能找出这个序列的开放阅读框吗?
第11题
A.基因组较小
B.可以通过同源重组进行基因敲除
C.大重复DNA序列片段可以作为一个更高级的的真核生物模型
D.高密度的开放阅读框
E.基因组大小适中