Question

The complementary, synthetic, and random DNA are used as
A. Transposons
B. Passenger DNA
C. Cloning vector
D. Recombinant RNA

Answer 1

Hint:- DNA is the hereditary material that is responsible for coding amino acids. It is a double helix structure that comprises nucleotides. Each nucleotide involves a nitrogenous base, deoxyribose sugar, and a phosphate group.

Complete step-by-step solution:-
Transposons: transposons are also known as jumping genes. Transposons are DNA sequences that are capable of changing their position within a gene. Transposons are used to insert a foreign piece of DNA into a genome.
Passenger DNA: the piece of DNA sequence carrying unique characteristics, that is used to introduce new traits by inserting it within a host DNA is called passenger DNA. This passenger DNA is first isolated from an organism by using some enzymes. Isolated DNA pieces are then cloned and introduced into the host organism. There are three types of passenger DNA found, named complementary DNA, synthetic DNA, and random DNA.
The DNA fragment which carries out an inserted foreign DNA sequence for cloning purposes is called cloning vector. The cloning vector is placed within the host organism so that it can produce proteins encoded by the foreign DNA fragment.
Joining of different DNA molecules from different organisms and placing it into a host cell for human welfare is called recombinant DNA.
Thus, the right answer is option B. Passenger DNA.

Note:- Recombinant DNA is used to produce various proteins like insulin, human growth hormone, etc. It is also used in agriculture, medicine, and other industries. Several vaccines are made using recombinant DNA.