The correct option is A Transgenic models exist for many human diseases such as cystic fibrosis, Alzheimer’s disease, cancer and rheumatoid arthritis.
Transgenic models
Many transgenic animals are introduced with genes for certain diseases.
Progression and possible cure for such diseases can be studied using these animals.
Transgenic animal models exist for many diseases such as cancer, cystic fibrosis, rheumatoid arthritis, Alzheimer’s disease etc.
Hence, the given statement in option C is correct.
Final answer
(c) Transgenic models exist for many human diseases such as cystic fibrosis, Alzheimer’s disease, cancer and rheumatoid arthritis.