Here's why:
* Chromosomes are made of DNA: DNA is a long, complex molecule that contains the genetic instructions for building and maintaining an organism. These instructions are organized into genes.
* DNA is organized into genes: Genes are specific segments of DNA that code for a particular protein or function.
* Proteins carry out cellular functions: Proteins are the workhorses of cells, carrying out a vast array of functions, from building and repairing structures to transporting molecules and catalyzing chemical reactions.
In summary: Chromosomes, made of DNA, contain the instructions (genes) that dictate which proteins to build. These proteins then perform the various tasks needed for a cell to function.
