With base substitution mutations, only a single nucleotide within a gene sequence is changed, so only one codon is affected (Figure 1). Insertions and deletions are two other types of mutations ...

Mutations generally fall into two types: point mutations and chromosomal aberrations. In point mutations, one base pair is changed. The human genome, for example, contains over 3.1 billion bases ...

There are many different types of mutations which can arise in DNA. This diagram shows the normal order of the bases for one of the strands in a DNA molecule. Only one of the strands of DNA is ...