题目内容
(请给出正确答案)
[主观题]
液相杂交(solution hybridization)
液相杂交(solution hybridization)
答案
查看答案
液相杂交(solution hybridization)
第2题
爪蟾卵母细胞在卵的发育后期用3H-尿苷同步标记。从卵母细胞中分离的放射性细胞质总RNA与由成体爪蟾提取的且呈单链形式结合在滤膜上的DNA进行杂交。该RNA:DNA杂交分子与原肠胚期爪蟾胚胎的非标记细胞质总RNA相竞争。图13-3-68A是假设的结果。在另一相应但相反的实验中,放射性原肠胚期细胞质RNA(原肠胚期胚胎用3H-尿苷标记)与滤膜上的总DNA杂交,该RNA:DNA杂交分子与非标记的后期卵细胞质RNA相竞争,结果如图13-3-68B。
第5题
Compared to hybrid resin composites,microfills are()
A.rougher
B.stronger
C.1ess rigid
D.darker
第6题
Which of the following is NOT a type of high-eopper amalgam()
A.single-composition lathe-cut
B.single-composition-spherical
C.dual-mixed reinforced hybrid spherical
D.admixture of lathe-cut with single-composition-spherical