Single step large mutation leading to speciation is also called

Options

A. Founder's effect
B. Saltation
C. branching descent
D. natural selection

Answer

**Step-by-Step Solution:**

1. **Understanding the Question:**
The question asks for the term that describes a "single step large mutation" that leads to speciation.

2. **Identifying Key Terms:**
- **Single step:** This indicates that the mutation occurs in one significant change rather than multiple gradual changes.
- **Large mutation:** This suggests that the mutation has a substantial effect on the organism, potentially leading to the development of a new species.
- **Speciation:** This is the process by which new species arise.

3. **Analyzing the Options:**
- **A. Converse effect:** This term does not relate to mutations or speciation.
- **B. Filtration:** This term is not relevant in the context of mutations or speciation.
- **C. Branching descent:** This refers to the evolutionary process where species diverge from a common ancestor, not specifically to mutations.
- **D. Natural selection:** This is a mechanism of evolution but does not specifically refer to mutations.

4. **Identifying the Correct Term:**
The term that fits the description of a "single step large mutation" is **saltation**. Saltation refers to a sudden and significant change in an organism's genetic makeup that can lead to the emergence of a new species.

5. **Conclusion:**
Therefore, the correct answer to the question is **saltation**.

**Final Answer: Saltation**

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