A nonsense mutation is a genetic mutation in a DNA sequence that results in a shorter, unfinished protein product. DNA is a chain of many smaller molecules called nucleotides. During protein ...

A frameshift mutation is a genetic mutation caused by a deletion or insertion in a DNA sequence that shifts the way the sequence is read. A DNA sequence is a chain of many smaller molecules called ...

By Gina Kolata Researchers have corrected a disease-causing gene mutation with a single infusion carrying a treatment that precisely targeted the errant gene. This was the first time a mutated ...