Are Genomes Smaller Than Genes?

From smallest to largest: nucleotide, gene, chromosome, genome.

What is the difference between genomes and genes?

A gene consists of enough DNA to code for one protein, and a genome is simply the sum total of an organism's DNA.

How big is the genome?

A real human genome is 6.4 billion letters (base pairs) long.

James H. Sterling

James H. Sterling

Environmental Science & Climate Journalist

James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.