A) it is resistant to antibiotics
B) it is resistant to restriction enzymes
C) its ability to carry a foreign gene
D) its ability to cause infection in the host
Correct Answer: C
Solution :
Plasmids, cosmids or bacteriophages can be used as vector in genetic engineering. Plasmids are most widely used circular, extra chromosomal DNA segments seen in the bacterial cells. They carry a foreign gene or desired gene to the host. The size of plasmids ranges from \[1\times {{10}^{6}}\]to \[200\times {{10}^{6}}\]daltons. Among other vector plasmids are pBR 322, those of pUC series and Ti, Ri plasmids of Agrobacterium.
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