What other names were available for gene at the time of Mendel's era ?

Explanation

**Step-by-Step Solution:**

1. **Understanding Mendel's Contribution**: Gregor Mendel is known as the father of genetics for his pioneering work on inheritance patterns in pea plants. He established the foundational laws of inheritance.

2. **Identifying the Terminology**: During Mendel's era, the term "gene" was not yet established. Instead, Mendel referred to the units of heredity as "factors."

3. **Explaining the Role of Factors**: Mendel's factors are what we now understand as genes. He proposed that these factors are responsible for the inheritance of traits from parents to offspring.

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