Answer the following question given this paragraph: 

Transgenic Animals Although several recombinant proteins used in medicine are successfully produced in bacteria, some proteins require a eukaryotic animal host for proper processing. For this reason, the desired genes are cloned and expressed in animals, such as sheep, goats, chickens, and mice. Animals that have been modified to express recombinant DNA are called transgenic animals. Several human proteins are expressed in the milk of transgenic sheep and goats, and some are expressed in the eggs of chickens. Mice have been used extensively for expressing and studying the effects of recombinant genes and mutations.


Q: Animals that have been modified to express recombinant dna are called what?

 Choices:

- reproducing animals

- mammalian animals

- aquatic animals

- transgenic animals

A:
transgenic animals
