What is the most commonly used animal for transgenic research?

Step-by-step solution

Over 95 per cent of all existing transgenic animals are mice. Mice are the most commonly used animal for transgenic research due to their smaller size and easier handling. Biological products: Medicines required to treat certain human diseases can contain biological products, but such products are often expensive to make. Transgenic animals that produce useful biological products can be created by the introduction of the portion of DNA (or genes) which codes for a particular product such as human protein (α-1-antit