The most important feature in a plasmid to serve as a vector in gene cloning experiment is ______.

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The most important feature in a plasmid to serve as a vector in gene cloning experiment are its size, presence of a selectable marker and presence of sites for restriction endonuclease. Explanation: An ideal plasmid vector should be compact (simple to handle), feature selectable markers (to identify transformed cells), and include restriction enzyme sites (for foreign DNA insertion). As a result, all of these features are necessary for gene cloning.

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