Here's a breakdown:
* Gene: A segment of DNA that contains the instructions for building and maintaining a specific protein.
* Genome: The entire collection of genetic material (DNA) in an organism, including all of its genes.
Think of it like this:
* Gene: A single recipe in a cookbook
* Genome: The entire cookbook
The human genome is incredibly complex, containing approximately 20,000 genes. These genes are arranged on 23 pairs of chromosomes, with one chromosome from each pair inherited from each parent.
The study of genomes is called genomics, and it has revolutionized our understanding of biology, disease, and evolution.