The second law of mendel is

Options

A. The purity of gametes
B. The segregation of unit factors
C. Independent assortment of alleles
D. The random fusion of gametes

Answer

**Step-by-Step Solution:**

1. **Understanding Mendel's Laws**: Gregor Johann Mendel, known as the father of genetics, proposed several laws based on his experiments with pea plants. His work laid the foundation for our understanding of inheritance.

2. **Identifying Mendel's Second Law**: Mendel's second law is known as the Law of Independent Assortment. This law states that the alleles of different genes assort independently of one another during gamete formation.

3. **Explanation of Independent Assortment**: During the formation of gametes (sperm and egg cells), the segregation of alleles for one trait is not influenced by the segregation of alleles for another trait. This means that the inheritance of one trait will not affect the inheritance of another trait.

4. **Options Analysis**: Given the options:
- Option A: The purity of gametes - This relates more to Mendel's first law (Law of Segregation).
- Option B: The segregation of unit factors - This also pertains to the first law.
- Option C: Independent assortment of alleles - This is the correct statement of the second law.
- Option D: The random fusion of gametes - While this is a concept related to genetic variation, it does not directly define the second law.

5. **Conclusion**: The correct answer to the question, "The second law of Mendel is," is **Option C: Independent assortment of alleles**.