13.+Chromosomes

__Chromosomes[[image:9sc4cells/Chromosomes_in_cell_division.JPG width="281" height="336" align="right" caption="You can see the chromosomes inside the nucleus during cell division."]]__
In the nucleus of each cell there is genetic information. This genetic information comes from both your mother and father and it is a code. It codes for what you look like, how your body functions, what type of organism you are etc. The genetic information is called DNA and DNA is found on thread-like structures called chromosomes. Chromosomes are normally invisable but can be seen within the cell nucleus during cell division. The number of chromosomes varies from species to species. In humans, every body cell has 46 chromosomes in the nucleus. They come in 23 pairs. Each pair is the same length. **ACTIVITIES.** 1. Copy the definition of chromosome into your wordlist. 2. Comment on the discussion for this page.
 * Definition:** **chromosome** - a thread-like structure found in the nucleus of cells that contain genetic information in the form of DNA.