Transgenic animals are organisms that have had their genetic material modified by the introduction of foreign DNA. This foreign DNA, typically from another species, is integrated into the genome of the host organism, resulting in the expression of new traits or characteristics. Transgenic animals are created through genetic engineering techniques, such as gene targeting, gene knockout, or gene insertion. These animals are used extensively in biomedical research to study gene function, disease mechanisms, and to develop models for human diseases. They may also be used in agriculture to improve livestock productivity, disease resistance, or to produce pharmaceutical proteins in their milk or eggs.
