<unk>  is a sub-field of biology that addresses how differences in the structures or expression of DNA molecules manifests as variation among organisms.<unk>  often applies an "investigative approach" to determine the structure and/or function of genes in an organism's genome using genetic screens. The field of study is based on the merging of several sub-fields in biology: classical Mendelian inheritance, cellular biology, molecular biology, biochemistry, and biotechnology. Researchers search for mutations in a gene or induce mutations in a gene to link a gene sequence to a specific phenotype.<unk>  is a powerful methodology for linking mutations to genetic conditions that may aid the search for treatments/cures for various genetics diseases.
Molecular genetics
Molecular pathology
Magnetogenetics
Genomics
Genetic marker
Lineage markers
Cytogenetics
Molecular biology