Question

The diagram illustrates the process of creating genetically modified corn.


What occurs at step 4 in the diagram?
The foreign DNA is placed in a mechanical vector for cloning.
The foreign DNA is placed in a biological vector for cloning.
The foreign DNA is inserted into the host cell genome.
The foreign DNA is isolated by restriction enzymes.

Answer 1

The answer is The foreign DNA is placed in a biological vector for cloning.

After target genes are identified and isolated, they are usually inserted into a transfer factor. In the process of creating genetically modified crops, the transfer factor is plasmid (a circular DNA molecule) from a soil bacterium Agrobacterium tumefaciens. Therefore, the transfer vector in which the foreign DNA is placed is a biological vector. It is not artificially produced but isolated from the living bacterium.

Answer 2

the answer to this question is B