Transgenic animals are the animals in which a foreign gene is expressed. Such animals can be used to study the fundamental biological process, phenomenon as well as for producing products useful for mankind. Give one example for each type.
Animals in which a foreign of DNA is incorporated so as to obtain desired products or to study its effects on the biological processes are called the transgenic animals.
- E.g. – in 1997, Rosie a cow has been made transgenic to produce α-lactalbumin rich milk (2.4g/L).
Animal models have been developed to provide α-1-antitrypsin used by humans for the treatment of emphysema.
- In Canada, gene for spider web has been isolated from spiders & was inserted into goat. The goat now produces spider webs along with milk.
Due to the great tensile strength & light weight these spider web fibres are used for the development of military uniforms & tennis rackets.
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(a) What are transgenic animals?
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