Genome

An organism’s genome is its entire genetic material—all its DNA, rather than just one chromosome or one gene. Think of the relationship as nucleus → chromosomes → DNA → sections of DNA called genes. Studying the whole human genome has given scientists a way to investigate genes across all the chromosomes, although studying it does not mean every gene’s effect is fully understood.

An organism's genome is its entire DNA. Imagine all the DNA instructions belonging to that organism collected together: that complete collection is its genome.

The genome is the entire genetic material of an organism: all its DNA, not just the parts linked to a particular feature.

The genome is the entire genetic material of an organism. “Entire” is important—it means all of that organism’s genetic material considered together, not just one chromosome or one gene.