在真核生物中,一个基因cDNA的5′端起始密码子AUG的前后序列符合()规则。
A.Kozak
B.AU…AG
C.SD
D.Poly(A)n
参考答案:A
—Where can we go into the trade center?
—Haven't you seen the sign _____ over there?[ ]
A.
B.
C.
D.
下列四项中,合法的IP地址是( )。
A.190.220.5B.206.53.3.78C.206.53.312.78D.123:43:82:220