In addition to the large CNV mutations they had spotted earlier, they also found de novo changes in single base pairs of DNA — known as single - nucleotide variants (SNVs)-- and small de novo insertions or deletions in chromosomes, all of which made the picture even more complex. (protomag.com)
Analytical methods for inferring functional effects of single base pair substitutions in human cancers Human Genetics DOI: 10.1007 / s00439 -009-0677-y (massgenomics.org)
They could see the results of recombination as well as other types of mutation, such as single base pair mutations. (yourgenome.org)