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Explore the world of genes, microarrays, and genetic algorithms. Learn the basics of genes, the importance of studying them, and how microarrays are revolutionizing gene research. Discover how microarrays help in understanding gene expressions, diseases, and regulatory networks. Uncover the role of genetic algorithms in solving classification problems and modeling gene regulatory networks.
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Gene, MicroArray and GAs Ashish Anand Kanpur Genetic Algorithms Laboratory (KanGAL) IIT Kanpur
Overview • What are Genes ? • Why study Genes ? • What is MicroArray ? • How it is Helping ? • Where does GA comes ?
What are Genes ? • Alphabet of 4 letters [A T G C] , called nucleotide bases • DNA • Sequences of ATGC • Double stranded, helical structure • Complementary Properties of Alphabets E.g. A T G C C | | | | | T A C G G • Gene : Nothing but DNA sequence
Why Study Gene ? • Central Dogma of Biology DNA mRNA Protein • mRNA : Sequence of 4 letters [A U G C] • Protein : Sequence of 20 Amino Acids • Gene Encodes Proteins • Regulates functioning of whole system
What is MicroArray ? • A small glass slide or nylon substrates • Each small square represents 1 gene • Uses Complementary Property of DNA sequence • A technology to study large no of Genes in one GO • Gives quantitative measure of Gene Expression
MicroArray : Contd. • Many Technologies • Two Color Vs One Color • Affymetrix widely used
How MicroArray is Helping? • An idea of changed expression levels of genes in • Treated/Disease/Mutant/Knock-out Vs Untreated/Normal/Wild-type • Different Tissues/Cells • Different Developmental Stages • Co-expressed Genes gives an idea of Gene Regulatory Network • Functional roles of different genes and their participation in different cellular and biological processes. • Diagnosis of disease like different cancer types
Where Does GA comes – Few Examples • Classification Problems • Modeling of Gene Regulatory Network