Where are genes located ? What is the chemical nature of gene ?

Explanation

### Step-by-Step Solution:

1. **Understanding Genes**:
- Genes are the fundamental units of heredity. They carry the information necessary for the development and functioning of living organisms. Genes are responsible for passing traits from parents to offspring.

2. **Location of Genes**:
- Genes are located on structures called chromosomes. Each chromosome contains many genes, and each gene is found at a specific position, known as a locus, on the chromosome.

...