List any two mechanisms by which a variant genotype is produced.

Explanation

To answer the question regarding the mechanisms by which a variant genotype is produced, we can break it down into clear steps:

### Step-by-Step Solution:

1. **Understanding Variant Genotype**:
- A variant genotype refers to a genetic makeup that differs from the typical or natural genome. This variation arises due to alterations in the DNA sequence.

2. **Identifying Mechanisms**:
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