What is the modern term given to the factor of Mendel ?

Explanation

**Step-by-Step Solution:**

1. **Introduction to Gregor Mendel**: Begin by recognizing who Gregor Mendel is. He is known as the father of genetics for his pioneering work in understanding heredity.

2. **Mendel's Experiments**: Mendel conducted experiments on pea plants to study how traits are inherited from one generation to the next. He focused on specific traits and observed their patterns of inheritance.

3. **Mendel's Factors**: In his studies, Mendel referred to the units that determine traits as "factors." These factors are responsible for the inheritance of specific characteristics.

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