Explanation

Reporter genes are used to determine a particular DNA construct has been successfully introduced into a cell, organ or tissue. Enhancer is a DNA sequence present within the control regions of many eukaryotic genes that can enhance transcription. A transgenic organism contains in its genome a gene or genes introduced by one or the other technique of transfection. The gene introduced by transfection is called transgen. Promoter is a cis-acting nucleotide sequence on a DNA molecule, which promotes the initiation of transcriptin.