WHY IS MOLECULAR GENETICS IMPORTANT?

 

Molecular genetics is a sub-field of biology that reports how the dissimilarities in the structures or expression of DNA molecules manifest as variation amongst the organisms. Molecular genetics frequently applies an "investigative method" to regulate the structure and/or function of genes in an organism's genome by means of genetic screens.

Forward genetics is a molecular genetics technique which is used to detect genes or genetic mutations that yield a certain phenotype. In a genetic screen, casual mutations are produced with mutagens (chemicals or radiation) or transposons and individuals are mark off for the precise phenotype. Reverse genetics is the term for molecular genetics techniques used to define the phenotype resulting from an intentional mutation in a gene of interest. The phenotype is used to presume the function of the un-mutated form of the gene.

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