Most commonly used vector for DNA cloning ?: (A) Plasmid, (B) Virus, (C) Cosmid, (D) Phage
Answer is A. A cloning vector is a carrier DNA molecule to which human DNA fragment is attached. Normally, foreign DNA fragments cannot self-replicate within host cell. Therefore, they are joined to a vector DNA, that can replicate within host cell.The five major types of cloning vectors used are -i) Plasmidsii) Viral vectors/Bacteriophagesiii) Cosmidsiv) Bacterial Aificial Chromosomes (BACs)v) Yeast aificial chromosomes (YACs)