题目内容
限制性片段长度多态性(RFLP)分析只能用于分析下面哪种情况的遗传病:( )
查看答案
搜索结果不匹配？点我反馈
更多问题
Most of today’s somatic engineering uses viral vectors to transfer a transgene into target cells. Unfortunately, the vectors insert transgenes at random sites within the receiving chromosome. The outcome is necessarily somewhat unpredictable because genes are affected by their immediate environment, which in this case is not well defined. Also, a transgene might cause serious side effects if it were placed in the middle of an important existing gene. A human artificial chromosome (short HAC) is a microchromosome that can act as a new chromosome in a population of human cells. That is, instead of 46 chromosomes, the cell could have 47 with the 47th being very small, roughly 6-10 megabase in size, and able to carry new genes introduced by human researchers.1. If we transfer an insulin gene into patient’s pancreas for gene therapy, we call the insulin gene a ______ .2. The therapy may not be predictable because (a) ______ 3. and (b)______ 4. HACs can be used by______ .5. One megabase is equal to ______ kelobases.
什么是限制性内切核酸酶的星活性:( )
考斯质粒(cosmid)是一种( )
下列DNA片段中含有回文结构的是( )
微信支付 
支付宝支付