Gene responsible for synthesis of hirudin protein was introduced in :

Options

A. Gossypium
B. Tomato
C. Brassica napus
D. Secale cereale

Answer

**Step-by-Step Solution:**

1. **Understanding Hirudin**: Hirudin is a naturally occurring anticoagulant that is produced and secreted by the salivary glands of the medicinal leech, specifically the species *Hirudo medicinalis*.

2. **Gene Synthesis**: The gene responsible for the synthesis of hirudin is chemically synthesized in the laboratory. This means that scientists can create a copy of the gene that encodes for the hirudin protein.

3. **Transformation Process**: The synthesized gene is then introduced into a plant species, specifically *Brassica napus*, through a method known as Agrobacterium-mediated transformation. This is a common technique used in biotechnology to insert genes into plant cells.

4. **Transgenic Plants**: After the introduction of the hirudin gene, the resulting transgenic plants are capable of producing seeds that accumulate hirudin. This means that the plants have been genetically modified to express the hirudin protein.

5. **Conclusion**: Based on the information provided, the correct answer to the question of where the gene responsible for the synthesis of hirudin protein was introduced is *Brassica napus*.

**Final Answer**: The gene responsible for the synthesis of hirudin protein was introduced in *Brassica napus*.

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