Genes are the smallest functional units of hereditary material found on chromosomes.
They are responsible for specific characters or traits and passed on from parent to offspring.
Genes are made up of sequences of DNA and are arranged linearly at specific locations on chromosomes in the nucleus of cells.
Some genes codes for specific proteins that lead to the expression of a specific physical characteristic or trait, such as hair color or eye color, or to a particular function in a cell.
Replication of genes is an important factor of cell division.
Genes control the structure and metabolism of the body.