It is becoming increasingly important to develop a novel
INTRODUCTIONDNA molecule, the fundamental fabric of life carries the genetic instruction for making living organisms. The main role of DNA is the long-term storage of information and it is often compared to a set of blueprints, since DNA contains the instructions needed to construct other components of cells, such as proteins and RNA molecules. The DNA segments that carry this genetic information are called genes, but other DNA sequences have structural purposes, or are involved in regulating the use of this genetic information. Chemically, DNA is a long polymer of simple units called nucleotides, which are held together by a backbone made of alternating sugars and phosphate groups. Attached to each sugar is one of four types of molecules called bases. The bases are adenine (A), thymine (T), cytosine (C) and guanine (G). It is the sequence of these four bases along the backbone that encodes information. This information is read using the genetic code, which specifies the sequence of the amino acids within proteins. Within cells, DNA is organized into structures called chromosomes and the set of chromosomes within a cell make up a genome. These chromosomes are duplicated before the cells divide, in a process called DNA replication.In chemical laboratory methods of DNA sequencing, a long DNA strand is chopped into slices and then biochemical method is applied to detect the nucleotide sequence in a single fragment. Then these known fragments are used to form a superstring, which is almost the same as the original DNA strand. In 1994, Leonard Adleman used molecular tools to solve a hard computational problem [3]. Adleman used traveling salesperson problem to manipulate DNA sequence and this is the first solution of a mathematical problem with biological tools. In The limitations of the conventional DNA sequencing methods can be overcome in the hybridization technique with the help of genetic algorithm; where in a single biochemical experiment (using a DNA probe chip) is possible to know almost all the subsequences of a specified length, which are presented in the original sequence. S-M. Chen et al. presented the method to solve DNA sequence alignment using genetic algorithm [3]. Inspired from their paper we present a new method for DNA sequence reconstruction using genetic algorithm. We choose the right successor with the help of successor choice technique and the fitness function. This method also deals with the oligonucleotides with negative and positive errors. Through this method we also manage the duplication of oligonucleotides.