Bruise resistant variety of tomato is the result of :

Options

A. Somatic hybridisaton
B. mass selection
C. antisense RNA technology
D. breeding for antinutritional factor

Answer

To answer the question regarding the bruise-resistant variety of tomato, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the technology used to create a bruise-resistant variety of tomato.

2. **Identifying the Variety**: The bruise-resistant tomato is a type of transgenic tomato, meaning it has been genetically modified to enhance certain traits.

3. **Gene Involvement**: In this case, the technology involves blocking the expression of a native tomato gene. This gene is responsible for producing an enzyme called polygalacturonase.

4. **Role of Polygalacturonase**: Polygalacturonase is an enzyme that contributes to the softening of the fruit. When this enzyme is present, it leads to the degradation of the cell walls in the tomato, causing it to soften and become more susceptible to bruising and over-ripening.

5. **Effect of Blocking the Gene**: By blocking the expression of the gene that produces polygalacturonase, the production of this enzyme is reduced. This reduction prevents the over-ripening of tomatoes, allowing them to remain fresh for a longer period and improving their overall quality and taste.

6. **Technology Used**: The technology used to create this bruise-resistant variety of tomato is known as antisense RNA technology. This technique involves using a strand of RNA that is complementary to the target mRNA, effectively inhibiting its expression.

7. **Conclusion**: Therefore, the bruise-resistant variety of tomato is the result of antisense RNA technology.

### Final Answer:
The bruise-resistant variety of tomato is the result of **antisense RNA technology**.

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