Question

Which of the following is NOT a property of useful vectors?

A. They must be small enough to allow them to be manipulated prior to injection.
B. They must be able to self-replicate.
C. They must have properties that allow their survival in the host cell.
D. They always contain only one gene.

Answer 1

The statement that vectors always contain only one gene is not correct; useful vectors can carry multiple genes and must be small, able to self-replicate, and have features for survival in the host.

Step-by-step explanation:

The statement 'They always contain only one gene' is NOT a property of useful vectors. Vectors can carry multiple genes, as their main purpose is to introduce genetic material into cells. Some key properties of useful vectors include:

• Being small enough to be manipulated before injection.
• Ability to self-replicate in the host cell.
• Having features that allow for survival in the host cell environment.

These properties ensure that vectors are effective in transferring genetic material and are maintained within the host organism for the desired purpose, such as in the creation of recombinant DNA molecules or for the production of target proteins.