what is the difference between plasmid and vector
Vector (molecular biology)
In molecular cloning , a vector is a DNA molecule used as a vehicle to artificially carry foreign genetic material into another cell , where it can be replicated and / or expressed ( e.g. - plasmid , cosmid , Lambda phages ) . A vector containing foreign DNA is termed recombinant DNA . The four major types of vectors are plasmids , viral vectors , cosmids , and artificial chromosomes . Of these , the most commonly used vectors are plasmids . Common to all engineered vectors are an origin of replication , a multicloning site , and a selectable marker . 
In molecular cloning , a vector is a DNA molecule used as a vehicle to artificially carry foreign genetic material into another cell , where it can be replicated and / or expressed ( e.g. - plasmid , cosmid , Lambda phages ) . A vector containing foreign DNA is termed recombinant DNA . The four major types of vectors are plasmids , viral vectors , cosmids , and artificial chromosomes . Of these , the most commonly used vectors are plasmids . Common to all engineered vectors are an origin of replication , a multicloning site , and a selectable marker .
A vector is a DNA molecule used as a vehicle to artificially carry foreign genetic material into another cell and plasmids is one of the most commonly used vectors among the four major types: plasmids, viral vectors, cosmids, and artificial chromosomes.
In molecular cloning , a vector is a DNA molecule used as a vehicle to artificially carry foreign genetic material into another cell , where it can be replicated and / or expressed ( e.g. - plasmid , cosmid , Lambda phages ) . The four major types of vectors are plasmids , viral vectors , cosmids , and artificial chromosomes . Of these , the most commonly used vectors are plasmids .