Genetic Inheritance
Pea plants taught Gregor Mendel the basic rules of inheritance in the 1860s, decades before anyone had identified DNA as the carrier.
Mitochondria
Tiny former bacteria living inside nearly every cell you own, quietly paying the electric bill.
Photosynthesis
Photosynthesis turns sunlight, water, and carbon dioxide into sugar, releasing the oxygen we breathe almost as an afterthought.
DNA and RNA
DNA is the master recipe book; RNA is the photocopy that actually makes it to the kitchen.
Cell Biology
Your cells' power plants were probably once free-living bacteria, absorbed 1.5 to 2 billion years ago and never let go.
CRISPR
One of the most transformative technologies in modern biology started out as nothing more than a bacterium's own built-in defense system against viruses.
The Human Genome
Sequencing the first human genome took over a decade and about $3 billion. Today your own costs under $1,000.
Evolution
A theory that doesn't claim organisms get objectively "better" over time — just that whatever happens to work in a given environment tends to stick around.
Epigenetics
Same script, different performances: how the cells in your body read the same DNA and end up as brain, skin, or liver.
Viruses
A microscopic particle so stripped-down that scientists still debate whether it even counts as truly "alive" at all.