3.14 Chromosomes

• A typical cell has a nucleus and we would find a chromosome.
• The chromosome is compose of a molecule of DNA.
• This form a shape "double helix"  section of the molecule are called "gene". Each gene carry the information for a construction of protein.
• The protein gives us characteristic of the gene e.g. blood.
• Operated in pairs are homologous pairs.

* Why does it need to go in pairs?