问题
问答题
简述核酸分子杂交的基本原理、类别和应用。
答案
参考答案：核酸分子杂交：① 单链的核酸分子在合适的温度和离子强度下，通过碱基互补形成双链杂交体的一类技术。② 核酸分子杂交分为液相杂交、固相杂交、原位杂交、基因芯片技术。③ 主要应用Southern Blotting用于未知DNA的检测，Northern Blotting用于检测未知RNA，原位杂交用于组织和细胞中的基因定位。
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work for a rich farmer. The man paid him nothing except food and clothes 小题1:. He found some old books near the school and taught himself to read and write. 
in the town. But the stone weighed thirty tons at least and the strongest young men couldn’t do that. 小题3: Richard looked at it carefully for a while and said, “I have a way to move it away.” But few men believed him. 小题4: Night fell and people went home. Only the boy stayed there. To their surprise, the villagers found the stone was gone the next morning. They didn’t know
which spirit had moved it away小题5: .