Which one is not correct ?

Options

A. ELISA is based on the principle of antigen-antibody interaction.
B. First transgenic cow, Rosie was produced in 1997.
C. Gene therapy is used to treat hereditary diseases.
D. Human insulin is not made in bacteria.

Answer

To determine which statement is not correct, we will analyze each option provided in the question.

**Step 1: Analyze the first option.**
- The first option states that "ELISA is based on the principle of Antigen-Antibody Interaction."
- This is correct. ELISA (Enzyme-Linked Immunosorbent Assay) indeed relies on the interaction between antigens and antibodies to detect the presence of specific substances, such as proteins or hormones.

**Step 2: Analyze the second option.**
- The second option claims that "The first transgenic cow, Roji, was produced in 1997."
- This is also correct. Roji was indeed the first transgenic cow, and it was produced in 1997. It was engineered to produce milk containing a specific protein.

**Step 3: Analyze the third option.**
- The third option states that "Gene therapy is used to treat genetic diseases."
- This statement is correct. Gene therapy aims to treat or prevent diseases by introducing, removing, or altering genetic material within a patient's cells, and it has been used to treat various genetic disorders.

**Step 4: Analyze the fourth option.**
- The fourth option asserts that "Human insulin is not made in bacteria."
- This statement is incorrect. Human insulin is indeed produced using recombinant DNA technology in bacteria, specifically E. coli. This method allows for the mass production of human insulin for diabetes treatment.

**Conclusion:**
- The option that is not correct is the fourth one: "Human insulin is not made in bacteria."