Image: Flocci Nivis, CC BY 4.0, via Wikimedia Commons (source)
Genetics moves fast, and a lot of what turns up in a search is either too technical or simply wrong. These sites are run by research institutes, universities and public health bodies, and they explain DNA and heredity without cutting corners.
Some are built for learners, and some are the databases scientists use every day.
1) National Human Genome Research Institute
The US institute that led the Human Genome Project. Its site has a talking glossary of genetic terms, fact sheets and news on genomics research.
Best for: Trustworthy basics and a genetics glossary. Visit National Human Genome Research Institute
2) MedlinePlus Genetics
From the US National Library of Medicine, it explains how genetic variation affects health, with pages on genetic conditions, genes and chromosomes.
Best for: Understanding a genetic condition. Visit MedlinePlus Genetics
3) Learn.Genetics
The University of Utah's Genetic Science Learning Center. Its interactive animations and virtual labs make topics like DNA extraction and inheritance easy to follow.
Best for: Students and teachers. Visit Learn.Genetics
4) DNA Learning Center (Cold Spring Harbor)
The education arm of Cold Spring Harbor Laboratory, with animations, 3D models and lab activities about DNA and molecular biology.
Best for: Animations of how DNA works. Visit DNA Learning Center (Cold Spring Harbor)
5) Ensembl
A genome browser used by researchers to explore the genomes of humans and many other species, with gene annotations and comparisons.
Best for: Exploring real genome data. Visit Ensembl
6) Scitable by Nature Education
Nature's free science education platform, with readable articles on genetics, cell biology and evolution.
Best for: Readable articles from a major publisher. Visit Scitable by Nature Education
7) yourgenome
Explains DNA, genes and genomes for a general audience, with stories, activities and explainers.
Best for: Curious readers new to genetics. Visit yourgenome
More science resource lists
Every site on this list was checked and loading on 30 October 2026. For more, see Top 10 Biology Websites for Enthusiasts and Experts and The Top 10 Medicine Websites.