Blog
Deep dives on genetics, biology and the lab.
Translation Definition Biology: How Cells Make Proteins
Ask most people what happens after your cells "read" DNA, and you'll get a shrug or a half-remembered diagram from ninth grade. Here's what that diagram almost always leaves out: the translation definition biology teache
Translation vs Transcription: The Two Steps Nobody Keeps Straight
You'd think a word as basic as "transcription" would be easy to keep separate from "translation." It isn't. Ask ten biology students to explain the difference and at least half will start describing DNA making proteins d
RNA Does a Lot More Than Carry Messages. Most People Don't Know Half of It
You probably think RNA's whole job is to carry copies of your genes to the cell's protein factories. That belief isn't wrong, exactly — it's just a fraction of the truth. RNA also silences genes, edits its own instructio
The Six Kingdoms of Life Are Already Outdated. Here's Why
You probably learned six kingdoms in ninth-grade biology: animals, plants, fungi, protists, and two kinds of bacteria. That chart is wrong — not slightly outdated, structurally wrong. Since the 1990s, biologists have org
Polygenic Traits: Why Your Height Isn't Controlled by a Single Gene
You inherited your height from your parents, but not the way you inherited a widow's peak or the ability to roll your tongue. If you learned genetics through Mendel's pea plants, you probably picture one gene, two allele
What Happens in the Prophase? Chromosomes Condense
Here's the part almost nobody gets right: your chromosomes aren't summoned into existence at the start of prophase. They're there the whole time, just invisible under a microscope because they're unwound into a loose tan
Define Recessive Biology: Alleles and Traits
You probably learned it wrong. If you were taught that "recessive" means weak, faded, or on its way out of the gene pool, you learned a version of genetics that biology dropped decades ago. To define recessive biology ac
Telomeres: The Biological Clock Hidden at the End of Every Chromosome
You've probably seen the ad: spit in a tube, mail it off, and get back a "biological age" that's supposedly more accurate than your birth certificate. The pitch relies on telomere aging — the idea that the caps on your c
Dominant and Recessive in Genetics: Key Differences
You probably think a dominant allele must be the more common one in a population, or that it somehow "wins" because it's biologically stronger. Neither is true. Dominant and recessive in genetics describe a molecular rel
Your DNA Breaks Thousands of Times a Day. Here's How It Fixes Itself
Your DNA breaks somewhere between 10,000 and 1,000,000 times a day, depending on which cell you're talking about. That sounds like a crisis. It isn't. DNA damage repair is running in your cells right now, correcting typo
When Does Replication of DNA Occur? Cell Cycle
You picture a cell splitting in two, and somewhere in that dramatic split, you assume the DNA is getting copied. That's the version most people carry around from ninth-grade biology, and it's backward. DNA replication —
Endogenous Retroviruses: Why 8% of Your DNA Is Viral
You've probably seen the claim: 8% of your DNA is viral. It sounds like a horror movie premise, but endogenous retroviruses are real, and that number is accurate. What most posts leave out is what that 8% actually does i
The Central Dogma of Biology Has an Exception Nobody Taught You
Your biology teacher drew an arrow. DNA → RNA → Protein. One direction. No exceptions. That arrow was always incomplete. And in April 2026, it got a lot more complicated. The central dogma of biology exceptions matter be
Central Dogma of Biology: DNA to Protein
Can DNA build a protein all by itself? No. It can't. That's the first myth worth killing, because the central dogma of biology gets taught as a straight arrow — DNA to RNA to protein — when the real story has detours, ex
Epigenetic Inheritance: Can Your Lifestyle Change Your Children's DNA?
Can eating badly for a decade actually change your future kid's DNA before they're even conceived? Not exactly. Your habits can leave chemical marks on how genes switch on and off — a process called epigenetic inheritanc
Why mRNA Is the Unsung Hero of Every Living Cell — And Why Scientists Are Obsessed With It
Every protein in your body — from the hemoglobin carrying oxygen through your bloodstream to the collagen holding your skin together — was built from instructions delivered by mRNA. That single molecular step, the one th
Mitochondrial DNA: Why You Inherit This Entirely From Your Mother
You've probably heard that your mitochondrial DNA comes entirely from your mother, and figured that must mean your father's mitochondria simply never make it into the picture. That's not quite right. His mitochondria do
RNA Splicing: Your Cells Edit Their Own Instructions Before Using Them
Your DNA doesn't decide which protein your cells make. Not by itself, anyway. Every gene gets copied into a rough-draft message first, and that draft goes through RNA splicing — an editing process that cuts out chunks an