NEET Biology question
**Statement 1:** All expression vectors are cloning vectors and vice versa. **Statement 2:** Expression vectors have at least the regulatory sequences (i.e., promoters, operators, ribosome-binding sites, etc.) with optimum function in the chosen host, in addition to (not merely) an origin of replication.
Answer: (D)
Solution
Statement 1 is false: while every expression vector is indeed also a cloning vector (it must still replicate and carry the insert), the reverse is not true — a basic cloning vector (needing only an origin of replication and a selectable marker) need not carry the additional regulatory sequences required for expressing
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