Question

If an alien DNA is linked with the origin of replication, this alien piece of DNA can replicate and multiply itself in the host organism. This can be called as

• A. Both A and B
• B. Splicing
• C. Making multiple identical copies of any template DNA
• D. Cloning

Answer 1

The correct option is A Both A and B

Alien DNA
The foreign DNA that is placed into the cell is called alien DNA.

Origin of replication
The initiation of DNA synthesis occurs at a site called the origin of replication.

Genetic engineering
The modification of the genetic material (RNA or DNA) of organisms to use them to produce commercially important substances is called genetic engineering.

Process of genetic engineering
The process of genetic engineering involves the following:
Formation of recombinant DNA - The gene of choice is inserted into the vector DNA and linked to the ‘origin of replication. The vector DNA along with the gene of interest is called the recombinant DNA.
Gene transfer - It is the transfer of the recombinant DNA into the host cell through the process of transformation.
Gene cloning- It is the formation of multiple copies of the gene of interest in the host cell.

Splicing
DNA splicing is the process of removal of the introns or the non-coding part of the DNA using spliceosome, in post transcriptional modifications..

Final answer
(D) Both A and B