Which of the following statements about transgenic animals is/are false?
(i) Transgenic animals are designed to study how genes are regulated.
(ii) They are specially made to serve as models for human diseases.
(iii) Transgenic cow Rosie was created to produce the human protein a-1-antitrypsin.
(iv) Transgenic mice are used to test the safety of vaccines.
(a) (iii) only (b) (i) and (iii) only
(c) (ii) only (d) (ii) and (iii) only
Answer (a) : Several human genes have been successfully transferred in cows and expressed the mammary tissue, the protein is secreted in milk from where it is easily harvested.
