Two similar holotypes are called

Options

A. Mesotypes
B. meotypes
C. Syntype
D. Isotypes

Answer

**Step-by-Step Solution:**

1. **Understanding Holotype**: A holotype is a single physical example of an organism, used to describe and define a species. It serves as the definitive example of that species.

2. **Identifying Similar Holotypes**: When we have two holotypes that are similar in nature, we need to identify the correct term that describes this relationship.

3. **Options Analysis**: The options provided are:
- A) Mesotype
- B) Meotype
- C) Syntype
- D) Isotype

4. **Evaluating Each Option**:
- **Mesotype**: This term is not used for two similar holotypes; it generally refers to a single holotype.
- **Meotype**: This term is not related to holotypes at all.
- **Syntype**: This term refers to a set of specimens that are used to describe a species when no holotype was designated. It does not apply to two similar holotypes.
- **Isotype**: This term specifically refers to duplicate specimens of the same holotype, which are used to illustrate the same species.

5. **Conclusion**: The correct answer is **Isotype** (Option D), as it refers to two similar holotypes.