Gene trapping refers to a technique used in molecular biology to identify and isolate specific genes. Synonyms for gene trapping include gene tagging, insertional mutagenesis, gene knock-in, and gene capture. These methods involve introducing a foreign DNA sequence, such as a reporter gene, into the genome of an organism. The foreign sequence is then used as a marker to identify the location of the gene of interest. This allows researchers to study the function of the gene and its role in various biological processes. Gene trapping has numerous applications in fields such as genetics, developmental biology, and biotechnology, making it a valuable tool for scientists.