The genetically engineered ‘golden rice’ is rich in ?
**Core Concept**
The genetically engineered 'golden rice' is a product of biotechnology, aimed at improving nutritional content. **Beta-carotene**, a precursor to **vitamin A**, is the key nutrient enhanced in this rice variety. This enhancement is crucial for addressing **vitamin A deficiency** in populations reliant on rice as a staple food.
**Why the Correct Answer is Right**
'Golden rice' is engineered to express **beta-carotene**, which the body converts into **vitamin A**. This is achieved through the introduction of genes from bacteria and daffodils, enabling the rice to produce this essential nutrient. The presence of **beta-carotene** gives the rice its characteristic golden color and significantly enhances its nutritional value.
**Why Each Wrong Option is Incorrect**
**Option A:** Incorrect because while iron is an essential nutrient, 'golden rice' is specifically engineered for **beta-carotene** content.
**Option B:** Incorrect as 'golden rice' is not primarily engineered for **protein** enhancement.
**Option C:** Incorrect because, although important, **folic acid** is not the primary nutrient increased in 'golden rice'.
**Option D:** Incorrect as 'golden rice' is engineered for **beta-carotene**, not specifically for **calcium**.
**Clinical Pearl / High-Yield Fact**
The development of 'golden rice' is a significant public health intervention aimed at reducing **vitamin A deficiency**, which can lead to night blindness and more severe health issues. Remember, **beta-carotene** is a precursor to **vitamin A**.
**Correct Answer:** D. Beta-carotene.