Statements related to human Insulin are given below.

Which statements is/are correct about genetically engineered Insulin?

(a) Pro-hormone insulin contain extra stretch of C-peptide

(b) A-peptide and B-peptide chains of insulin were produced separately in E.coli, extracted and combined by creating disulphide bond between them.

(c) Insulin used for treating Diabetes was extracted from Cattles and Pigs.

(d) Pro-hormone Insulin needs to be processed for converting into a mature and functional hormone.

(e) Some patients develop allergic reactions to the foreign insulin.

Choose the most appropriate answer from the options given below :

When gene targetting involving gene amplification is attempted in an individual's tissue to treat disease, it is known as :

With regard to insulin choose correct options.

(1) C-peptide is not present in mature insulin.

(2) The insulin produced by rDNA technology has C-peptide.

(3) The pro-insulin has C-peptide

(4) A-peptide and B-peptide of insulin are interconnected by disulphide bridges.

Choose the correct answer from the options given below.

Which of the following statements is not correct?