DNA Microarray

A DNA microarray is a laboratory tool used to study gene activity. It consists of a small solid surface, like a glass slide, with many tiny spots, each containing specific DNA sequences. When a sample of labeled genetic material is applied, it binds to matching sequences on the array. By measuring the binding signals, scientists can determine which genes are active and to what extent in a cell or tissue sample. This helps in understanding gene expression patterns, diagnosing diseases, and researching genetic functions efficiently across thousands of genes simultaneously.