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3.6▵BU 3.6▵BD 5.4▵BD 5.4▵BU
若四个检查项目均不低于Bu级,可按占多数的等级确定 若仅一个检查项目低于Bu级,定为Bu级 若不止一个检查项目低于Bu级,定为Cu级 若三个检查项目低于Bu级,定为Du级
互补配对,烯醇式可与G.互补配对。在含有5—BU的培养基中培养大肠杆菌,得到少数突变体大肠杆菌,突变型大肠杆菌中的碱基数目不变,但(A.+T)/(C.+G)的碱基比例不同于原大肠杆菌。下列说法错误的是 A.5—BU诱发突变的机制是诱发DNA链发生碱基种类替换 5—BU诱发突变的机制是阻止碱基配对 培养过程中可导致A./T对变成G./C对 5—BU诱发突变发生在DNA分子复制过程中
5- BU诱发突变的机制是诱发DNA链发生碱基种类替换 5- BU诱发突变的机制是阻止碱基配对 培养过程中可导致A/T对变成G/C对,或G/C对变成A/T对 5- BU诱发突变发生在DNA分子复制过程中
2△BI联合3.46△BD 2△BI联合3.46△BU 2△BO联合3.46△BD 2△BO联合3.46△BU
THAT THE REASON FOR WHY WHY THAT
adopted adapted accompanied annoyed
若四个检查项目均不低于Bu级,则可按占多数的等级确定 若仅一个检查项目低于Bu级,则定为Bu级 若不止一个检查项目低于Bu级,则定为Cu级 若三个检查项目低于Bu级,则定为Du级
The hull must bu clean There must be calm weather-wind 1knots or less and a calm sea There must be no current The depth of the water mest be at least one and one-half times the draft"
5- BU诱发突变的机制是诱发DNA链发生碱基种类替换 5- BU诱发突变的机制是阻止碱基配对 培养过程中可导致A/T对变成G/C对 5- BU诱发突变发生在DNA分子复制过程中
The penny which doubles itself every day for one month. The time span of at least two million years in human history. An illustration of the exponential growth rate given by the author. The large amount of money you would luckily make after the fourth week.
0.7ΔBD 0.7ΔBU 0.5ΔBD 0.5ΔBU
beng fu beng bu ben fu peng bu
互补配对,烯醇式可与G.互补配对。在含有5-BU的培养基中培养大肠杆菌,得到少数突变体大肠杆菌,突变型大肠杆菌中的碱基数目不变,但(A.+T)/(C.+G)的碱基比例不同于原大肠杆菌。下列说法错误的是 A.5-BU诱发突变的机制是诱发DNA链发生碱基种类替换 5-BU诱发突变的机制是阻止碱基配对 培养过程中可导致A./T对变成G./C对,或G./C对变成A./T对 5-BU诱发突变发生在DNA分子复制过程中
5-BU诱发突变的机制是诱发DNA链发生碱基种类替换 5-BU诱发突变的机制是阻止碱基配对 培养过程中可导致A/T对变成G/C对,或G/C对变成A/T对 5-BU诱发突变发生在DNA分子复制过程中
that the reason for why why that