For a long time, evolutionary biologists have thought that the genetic mutations that drive the evolution of genes and proteins are largely neutral: they're neither good nor bad, but just ordinary ...

Occasionally, single-letter misspellings in the genetic code, known as point mutations, occur. Point mutations that alter the resulting protein sequences are called nonsynonymous mutations, while ...

Addressing the relationship between mutations and their effects on the functional landscape can provide a detailed evolutionary trajectory of a protein 1. However, nonadditive interactions between ...

All biological systems are to some extent evolvable. That is, they are capable of bringing forth variation that is both adaptive and heritable, and that enables them to respond to natural selection.

Genes hold the recipe for proteins, which are made of amino acids. DNA only has four letters, or nucleotides, and each sequence of three nucleotide bases, or codon, encodes for one amino acid. There ...

Here’s what you’ll learn when you read this story: In the 1960s, Kimura’s neutral theory revolutionized molecular biology by arguing most DNA changes are random, not adaptive. A new study finds ...

In simple terms: a mutation is a stable change in genetic sequence that can be copied when cells or viruses replicate. Most mutations have no detectable effect, some contribute to disease, and a small ...

Ever since the genetic code was cracked, those mutations have generally been assumed to be neutral, or nearly so. But in a study published online June 8 in the journal Nature that involved the genetic ...