which does easily appear in PCR technology ()
A. false-negative result
B. false-positive result
C. lower sensitivity
D. not widely be applied
E. operation complicate
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In clinical gene therapy, the most common gene delivery vehicles is ()
A. bacteriophage
B. virus
C. liposome
D. plasmid
E. yeast artificial chromosome
At present, gene therapy cannot be practiced with ( )
A. tumor cells
B. germ cells
C. fibroblasts
D. lymphocytes
E. hematopoietic cells
At present, the most exact and direct way of gene diagnosis method is ()
A. RFLP
B. PCR
C. DNA sequencing
D. ASO hybridization
E. restriction mapping analysis
The substance of SNP is ( )
A. base deletion
B. base insertion
C. base substitution
D. frameshift mutation
E. Disorder in transcription
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