Applications of Microarrays DNA Chips - 1. Studies of the gene expression pattern of an organism as affected by the stage of development and/or environment.

2. Identification of common regulatory elements shared by co regulated genes.

3. DNA chips can be prepared for the detection of SNPs (single nucleotide polymorphisms; these are called SNP chips.

4. DNA chips can be used for the detection of genetic diseases, e.g., for detection of mutant alleles causing cystic fibrosis, mutant alleles of gene BRCA1 (gene involved in breast cancer), etc.