The DNA molecule wraps around small molecules called histones to become a chromosome.

Here's a breakdown:

* DNA is a long, thin molecule that contains the genetic code of an organism.

* Histones are proteins that act like spools for the DNA. They have a positive charge, which attracts the negatively charged DNA.

* Nucleosomes are the basic structural units of a chromosome. They consist of DNA wrapped around a core of eight histone proteins.

* Chromatin is the complex of DNA and proteins that makes up chromosomes.

* Chromosomes are condensed, tightly packed structures of chromatin that are visible during cell division.

So, the process is:

1. DNA wraps around histones to form nucleosomes.

2. Nucleosomes are further packed and organized to form chromatin.

3. Chromatin is condensed into chromosomes during cell division.