FUZZY ART MAP ALGORITHM FOR DATA MINING IN BIO INFORMATICS Bio informatics is the application of information technology to the management of bio logical data. It is interdisciplinary area of science where mathematics , statistics,and computer science are applied to data produced by experimental work in bio chemistry,cell,biology and genetics. The need for merging of the biological sciences with the world of It and computer science has mainly arisen due to the huge amount of information being produced from the study of genetic material . Mapping is the process of splitting each chromosome into smaller fragments,which could be propagated and characterized and placed back in correct order on each chromosome. Sequencing is a process of determination of the order of the nucleotides(base sequences) in DNA or RNA molecule,the order of amino acids protein. Genomics refers to the number of genes ,the function of genes the location and regulation of genes. In data acquisition first the DNA sample of the person has to be retrieved. A DNA sample can be obtained from any tissue, including blood. then the given DNA sample is ionized using ESIElectrospray ionization (ESI) allows production of molecular ions directly from samples in solution. It can be used for small and large molecular-weight biopolymers (peptides, proteins, carbohydrates, and DNA fragments), and lipids. I is a continuous ionization method that is suitable for using as an interface with HPLC or capillary electrophoresis. Multiply charged ions are usually produced. ESI should be considered a complement to MALDI. The sample must be soluble, stable in solution, polar, and relatively clean (free of nonvolatile buffers, detergents, salts, etc.). Laboratories preprocess the genetic data obtain from the ionization method using a series of modular programs .These are most commonly written in Perl,however other languages that are often used include Python,XML and JAVA.These preprocessing basically involves the organizing of sequence of data and the checking of data integrity ,after these processes are carried out the data can be imported into a data base.Sequence data comes in the form of base strings