Expression of Cloned Genes - Introduction - Once cloned, the DNA must be analyzed if it is to yield information regarding gene structure and function, and if biotechnological applications are to be considered.

The expression and integration of cloned genes can be analyzed with restriction enzyme analysis, DNA sequencing, Southern blot analysis, Northern blot analysis, in situ hybridization etc.

Restriction fragment length polymorphism (RFLP), random amplified polymorphic DNA (RAPD), and DNA fingerprinting techniques are widely used in gene mapping and identification of different systems.