Which is being synthesized by genetic engineering ?

Options

A. Insulin
B. Renin
C. Thyroxine
D. Progesterone

Answer

**Step-by-Step Solution:**

1. **Understanding Genetic Engineering**: Genetic engineering is a technique that involves modifying the genetic material of an organism to produce desired traits or products. This can include the synthesis of proteins, hormones, or other biological molecules.

2. **Identifying the Options**: The question provides four options: insulin, renin, thyroxine, and progesterone. We need to determine which of these has been synthesized using genetic engineering techniques.

3. **Researching Insulin**: Insulin is a hormone produced by the pancreas that regulates blood sugar levels. Historically, insulin was derived from animal sources, but in 1982, it was the first human hormone to be synthesized using recombinant DNA technology.

4. **Understanding Recombinant DNA Technology**: This technology involves inserting the gene that codes for insulin into a vector (like a plasmid) and then introducing this vector into a host organism, commonly E. coli. The bacteria then use the inserted gene to produce insulin.

5. **Conclusion**: Based on the historical context and the application of genetic engineering, insulin is the correct answer as it was synthesized through recombinant DNA technology.

**Final Answer**: Insulin is being synthesized by genetic engineering.

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