Genetic engineering has been successfully used for producing (a) Transgenic models for studying new treatment for certain cardiac diseases (b) Transgenic cow Rosie which produces high fat milk for making ghee (c) Animals like bulls for farm work as they have super power (d) Transgenic mice for testing safety of the polio vaccine before use in humans.
Option D.Transgenic mice are being formed for use in testing the safety of before they are used they are used on human beings. They are being used to test the safety of the polio vaccine. The first transgenic cow. Rosie produced human protein enriched milk (2.4 gms per litre). The milk contained the human alphalactalbumin. It is a more balanced product for human babies than natural cow-milk. Bulls with more power are produced by animal breeding not by genetic engineering.
