Genetics

114 articles with this tag

How Your Sense of Smell Works—From Nose to Brain Science

How Your Sense of Smell Works—From Nose to Brain

The human olfactory system detects thousands of odors using around 400 types of receptors that create unique neural patterns, connecting directly to b...

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How Liquid Biopsies Detect Cancer Before Symptoms Health

How Liquid Biopsies Detect Cancer Before Symptoms

Liquid biopsies analyze fragments of tumor DNA circulating in the bloodstream, offering a minimally invasive way to detect dozens of cancer types befo...

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Why Neanderthals Went Extinct—and What DNA Reveals Science

Why Neanderthals Went Extinct—and What DNA Reveals

Neanderthals survived for over 300,000 years before vanishing roughly 40,000 years ago. Scientists now believe their extinction resulted from a combin...

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How Pharmacogenomics Works—Why the Same Drug Hits Different Health

How Pharmacogenomics Works—Why the Same Drug Hits Different

Pharmacogenomics explains why identical medications can cure one patient and harm another. By reading genetic variants in drug-metabolizing enzymes an...

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How Lipid Nanoparticles Work—Medicine's Tiny Couriers Science

How Lipid Nanoparticles Work—Medicine's Tiny Couriers

Lipid nanoparticles are the microscopic delivery vehicles that made mRNA vaccines possible and are now revolutionizing gene therapy, cancer treatment,...

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How CRISPR Cures Sickle Cell—One Gene Edit Science

How CRISPR Cures Sickle Cell—One Gene Edit

CRISPR gene editing can now treat sickle cell disease by reactivating fetal hemoglobin production, offering a potential one-time cure for a condition...

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How Brain Organoids Work—Mini Brains Grown in a Lab Science

How Brain Organoids Work—Mini Brains Grown in a Lab

Brain organoids are pea-sized clusters of human neural tissue grown from stem cells. They mimic early brain development and are transforming research...

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How Humans Are Still Evolving—Faster Than Expected Science

How Humans Are Still Evolving—Faster Than Expected

A landmark study of 16,000 ancient genomes reveals that natural selection has accelerated in humans since the dawn of agriculture, shaping traits from...

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How Ancient DNA Analysis Works—and What It Reveals Science

How Ancient DNA Analysis Works—and What It Reveals

Scientists extract and sequence degraded genetic material from bones thousands of years old, rewriting human history and revealing lost populations, e...

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How Bacteria Share Antibiotic Resistance—Gene by Gene Science

How Bacteria Share Antibiotic Resistance—Gene by Gene

Bacteria swap resistance genes through horizontal gene transfer—conjugation, transduction, and transformation—spreading drug-proof traits across speci...

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How FGF21 Works—the Hormone That Burns Fat Science

How FGF21 Works—the Hormone That Burns Fat

FGF21 is a natural hormone that boosts metabolism, curbs sugar cravings, and may offer a new approach to treating obesity and liver disease—distinct f...

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How Metformin Works—and Why It Does Far More Than Expected Health

How Metformin Works—and Why It Does Far More Than Expected

Metformin, a cheap diabetes drug derived from a medieval plant remedy, is being studied for anti-aging, cancer prevention, and heart protection—making...

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