What is the fate of a piece of DNA carrying only gene of interest which is transferred into an alien organism?

A. The piece of DNA would be able to multiply itself independently in the progeny cells of the organism.

B. It may get integrated into the genome of the recipient.

C. It may multiply and be inherited along with the host DNA.

D. The alien piece of DNA is not an integral part of chromosome.

E. It shows ability to replicate.

Choose the correct answer from the options given below:

The correct answer is B and C only.

To understand the fate of an alien piece of DNA transferred into a host organism, we must look at how DNA replication works:
1. A random piece of DNA carrying only the gene of interest lacks a specific sequence called the origin of replication (ori). The origin of replication is the site where DNA replication is initiated. Without this sequence, the DNA cannot replicate independently or multiply itself within the host cell. Therefore, statements A and E are incorrect.
2. However, if this alien piece of DNA gets integrated into the genome (chromosomes) of the recipient organism, it becomes a part of the host's genetic material. Since the host chromosome has its own origin of replication, the integrated alien DNA will be replicated during cell division. Therefore, statement B is correct.
3. Once integrated into the host genome, the alien DNA will multiply alongside the host DNA and be inherited by the progeny cells. Therefore, statement C is correct.

Thus, statements B and C correctly describe the potential fate of the transferred DNA.