Fusion between morphologically alike gametes is referred to as

Options

A. isogamy
B. anisogamy
C. oogamy
D. syngamy.

Explanation

To answer the question "Fusion between morphologically alike gametes is referred to as," we can follow these steps:

### Step 1: Understand the Terms
- **Morphologically alike gametes**: This means that the gametes (reproductive cells) have similar shapes and sizes.
- **Gametes**: These are the cells involved in sexual reproduction, specifically sperm and egg cells.

### Step 2: Identify the Type of Gametes
- Gametes that are morphologically alike are called **isogametes**. The prefix "iso-" means "same" or "similar," indicating that these gametes are similar in appearance.

### Step 3: Define the Process
- The fusion of isogametes is referred to as **isogamy**. This term specifically describes the process where two similar gametes come together to form a zygote.

### Step 4: Consider Other Options
- **Anisogamy**: This refers to the fusion of dissimilar gametes (different in size and shape).
- **Oogamy**: This involves the fusion of a large female gamete (egg) and a smaller male gamete (sperm).
- **Syngamy**: This is a general term for the fusion of any gametes, resulting in the formation of a zygote, but does not specify the similarity of the gametes.

### Conclusion
The correct answer to the question is **isogamy**, which refers to the fusion of morphologically alike gametes.

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