Cryopreservation of gametes of threatened species in viable and fertile condition can be referred to as

Options

A. Advanced ex-situ conservation of biodiversity
B. In-situ conservation by scared groves
C. In-situ cryo-conservation of biodiversity
D. In-situ conservation of biodiversity

Answer

To solve the question regarding the cryopreservation of gametes of threatened species, we can break it down into steps:

### Step-by-Step Solution:

1. **Understanding the Terms**:
- The term "cryopreservation" refers to the process of preserving cells, tissues, or any biological constructs by cooling them to sub-zero temperatures.
- "Gametes" are the reproductive cells (sperm and eggs) that can be preserved.

2. **Identifying the Context**:
- The question specifies that the gametes are from "threatened species," indicating a conservation context.
- The goal is to maintain these gametes in a "viable and fertile condition," which is crucial for future reproduction.

3. **Types of Conservation**:
- There are two main types of conservation:
- **In-situ Conservation**: This involves conserving species in their natural habitats.
- **Ex-situ Conservation**: This involves conserving species outside their natural habitats, often in controlled environments.

4. **Analyzing the Options**:
- The options provided include various forms of conservation, including "advanced ex-situ conservation," "in-situ conservation," and "in-situ cryoconservation."
- Since cryopreservation involves storing gametes outside their natural habitat, it falls under ex-situ conservation.

5. **Determining the Correct Answer**:
- The term "advanced ex-situ conservation" accurately describes the process of cryopreserving gametes of threatened species in a viable and fertile condition.
- The other options (in-situ conservation and its variations) do not apply to the process of cryopreservation.

### Final Answer:
The cryopreservation of gametes of threatened species in viable and fertile condition can be referred to as **advanced ex-situ conservation of biodiversity**.

---