Golden rice is a genetically modified crop plant where the incorporated gene is meant for biosynthesis of:

Options

A. Vitamin A
B. Vitamin B
C. Vitamin C
D. Omega 3

Answer

### Step-by-Step Solution:

1. **Understanding Golden Rice**: Golden rice is a genetically modified variety of rice that has been engineered to produce beta-carotene, a precursor to vitamin A.

2. **Genetic Modification**: The modification involves the insertion of two specific genes responsible for the biosynthesis of beta-carotene. These genes are:
- **Phytoene synthase**
- **Phytoene desaturase**

3. **Location of Beta-Carotene Accumulation**: The beta-carotene produced accumulates in the endosperm of the rice grain, which is the part of the rice that is consumed.

4. **Color Change**: Due to the accumulation of beta-carotene, the rice grains appear yellow or golden instead of the usual white color, hence the name "golden rice."

5. **Purpose of Development**: Golden rice was developed primarily to address vitamin A deficiency, particularly in developing countries where dietary sources of vitamin A are limited.

6. **Conclusion**: Therefore, the correct answer to the question is that the incorporated gene in golden rice is meant for the biosynthesis of **vitamin A**.