The findings show how the H5N1 bird flu virus is evolving in livestock and what that may mean for human health.

As we age, our cells accumulate genetic changes—mutations—some of which open the door to cancer. Scientists call these ...

Cancer is often thought of as a single disease. Yet even tumors that arise in the same organ can follow very different genetic paths. A new study shows that these differences can sometimes be traced ...

The genetic building blocks of life—formed from the four nucleotides adenine (A), cytosine (C), guanine (G), and thymine (T)—are read in groups of three known as codons. While some codons (known as ...

Clones had mutations triple the rate of normal mice By the 58th generation, clones died within days of birth 1,206 cloned mice were generated from 2005 to 2025 Clones pass all their defective genes to ...

Here’s what you’ll learn when you read this story: While codons (combinations of three nucleotides) may vary in which do what functions, a long-standing rule was that each codon serves one specific ...

BA.3.2, a heavily mutated new COVID-19 variant that may be better able to evade immunity from vaccines or prior infection, is now spreading in the United States. Although COVID infections are ...