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Vectors should be capable of replicating autonomously, which, in turn, depends on the presence of particular sequences in the vector that enables them to initiate replication and propagation within the host cell.The following are some of the characteristic features of vectors These vectors have different sequences that enable them to initiate replication in host cells as well as propagate within the host. Some vectors might even have sequences that allow the production of proteins essential for the inserted DNA, regulation of the process, and further transfer of the insert between different vectors.

The size of an ideal vector should also be small enough for it to be incorporated into the host genome.

The small size of the vector also enables it to incorporate a large-sized insert for transfer.

Vectors should be easy to isolate and purify as these need to be recovered and reused for multiple processes.

For a vector to be effective, these should also have certain components that facilitate the process of determining whether the host cell has received the vector.