which vector can clone only a small fragment of DNA ?? 1) plasmid 2) cosmid 3) bacterial artificial chromosome 4) yeast artificial chromosome
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Plasmid can clone only a small fragment of DNA (0.5-8 kb) other can clone large
fragment of DNA like.
Cosmid (30 - 45 kb)
BAC (50 - 300 kb)
YAC (1000 - 2500 kb)
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Plasmid is the vector which clones only a small fragment of DNA.
Explanation:
The main function of vectors is to replicate the DNA sequence inserted in them. Usually in the field of genetic engineering the following five cloning vectors are used:
• Plasmids
• Bactriophages
• Viruses
• BAC
• YAC
Among the above mentioned vectors, Plasmid is used to clone small fragments of DNA. It is because it is small in size and is double stranded in nature.
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