Please select the true statement（s） using vectors to make recombinant DNA（）
A. The DNA of interest could not replicate if it were not in a plasmid
B. The vector prevents degradation of DNA by phages
C. Vectors are more well-characterized than chromosomal DNA
D. They accept longer DNA fragments
查看答案
Chromosomal or genomic DNA is separated by______（）
A. Sedimentation
B. Dissolution in water
Centrifugation
Distillation
Which of the following is used to lyse the nucleus and release the DNA（）
A. sodium dodecyl sulfate （SDS）
B. ammonium sulfate
C. ferric phosphate
D. phenol
What is（are） the feature（s） associated with M13 phage（）
A. Doesn’t need genes for insertion into host genome
B. Capsid constructed of multiple copies of 3 genes
C. Simpler infection cycle than lambda
D. Capsid constructed of 15 different proteins
Plasmids are ____（）
A type of virus
B. Extrachromosomal DNA found in bacteria
C. Double stranded
D. the tool to express any protein in living cells
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