Introduction to DNA
DNA is often referred to as the "building blocks of life". It provides the chemical instructions that guide the development of a cell.
To understand DNA properly, you should think back to mitosis and meiosis from Science 8 and Science 9.
For a good overview of mitosis, meiosis, and human sexual reproduction, click here.
Videos
What is a Chromosome? (2:58)
Genes, DNA and Chromosomes Explained (2:15)
Questions
- Where in the cell is DNA located?
- Define the following terms:
- DNA
- Double helix
- What are the four bases of DNA?
- Draw a picture of the chemical structure of each of the four bases of DNA.