When offspring is produced by a single parent with or without the involvement of gamete formation, the reproduction is called

Options

A. Asexual reproduction
B. Sexual
C. Parthenogenetic
D. Either A or B

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the type of reproduction that occurs when offspring are produced by a single parent, with or without gamete formation.

2. **Identifying the Key Terms**: The key terms in the question are "single parent," "offspring," and "gamete formation."

3. **Types of Reproduction**:
- **Asexual Reproduction**: This is when offspring are produced from a single parent without the involvement of gametes. The offspring are genetically identical to the parent, meaning they are clones.
- **Sexual Reproduction**: This involves two parents and the formation of gametes, which fuse during fertilization to create genetically diverse offspring.
- **Parthenogenesis**: This is a specific type of asexual reproduction where an offspring develops from an unfertilized egg, typically in females.

4. **Conclusion**: Since the question specifies reproduction by a single parent and does not require gamete formation, the correct answer is **asexual reproduction**.

**Final Answer**: Asexual reproduction.

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