Ambystoma shows

Options

A. Paedogenesis
B. Neoteny
C. Both (1) & (2)
D. None of these

Answer

To solve the question "Ambystoma shows," we need to analyze the characteristics associated with Ambystoma and the options provided. Here’s a step-by-step breakdown:

### Step-by-Step Solution:

1. **Identify Ambystoma**:
- Ambystoma is a genus that includes various species of salamanders, which belong to the order Urodela (or Caudata) and the phylum Chordata.

2. **Understand the Options**:
- The options provided are:
1. Pedogenesis
2. Neoteny
3. Both 1 and 2
4. None of these

3. **Define Pedogenesis**:
- Pedogenesis refers to the phenomenon where an organism reaches sexual maturity while still in its larval stage. This means that the organism can reproduce without undergoing complete metamorphosis.

4. **Define Neoteny**:
- Neoteny is the retention of juvenile traits in the adult stage of an organism. This means that the adult form of the organism retains characteristics that are typically associated with its juvenile form.

5. **Evaluate Ambystoma's Characteristics**:
- Ambystoma species exhibit both pedogenesis and neoteny. For instance, some species can reproduce while still in their larval form (pedogenesis), and they also retain juvenile features into adulthood (neoteny).

6. **Select the Correct Answer**:
- Since Ambystoma shows both pedogenesis and neoteny, the correct answer is option 3, which states "both 1 and 2".

### Final Answer:
Ambystoma shows both pedogenesis and neoteny (Option 3).

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