Your DNA is made up of about 3.2 billion bases. Around 97 percent of that doesn't do anything—at least, we don't think it does.
What This Means
Why It's Important
Editors' Picks: Our Favorite Videos About Genes
98% Of Your DNA Is Junk
Your genome is a big ol' mess.
What are you made of, really?
Are Genes Really Selfish?
If genes only care about their survival, you'd think it would make all organisms greedy. In that case, how did altruism evolve?
Written by Ashley Hamer December 19, 2016
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