Single-nucleotide polymorphisms (SNPs) are single- nucleotide differences between two DNA molecules. They may be base-pair changes or small insertions or deletions . SNPs occur randomly throughout the genome.
This issue of definition has gotten confused by some practitioners using the term "mutation" for "polymorphism" who didn't know better and they have been teaching that terminology to the public. I don't know if that usage can be reeled in at this point, but I'm trying.
Theragen Bio Institute
International Centre for Diarrhoeal Disease Research, Bangladesh
Ecole Pratique des Hautes Etudes
Manar Al-Eslam Mattar
National Cancer Institute Egypt
Chongqing Medical University
Vijaya Kumar Pidugu
Pedro Lobo Fernandes
Instituto Gulbenkian de Ciência (IGC)
University of California, Davis
Susan Costen Owens
Autism Research Institute
Silesian University in Opava