A genome is all the DNA in a cell, including all the genes.
Studying genomics
Recently, new technology has enabled scientists to look closely at the entire human genome.

They have also been able to describe the whole genomes of other animals, including those of bacteria, worms, flies, and mice. The science of genomics asks questions about all of these genes at once. Scientists can also compare genomes of different animals and figure out how they are similar and different.