single nucleotide polymorphism

noun

Medical Definition of single nucleotide polymorphism 

: snp Although all humans share 99.9 percent of their genetic material, single-letter differences in our DNA sequences—known as single nucleotide polymorphisms, or SNPs (“snips”)—ensure that each individual is unique.— Alison McCook, Scientific American, July 2001 In DNA dialect, if the nucleotide letter T appears instead of C, or G where usually there's A, the gene is said to contain a single nucleotide polymorphism.— Jeff Wheelwright, Discover, April 2002

Learn More about single nucleotide polymorphism

Share single nucleotide polymorphism

Resources for single nucleotide polymorphism

Comments on single nucleotide polymorphism

What made you want to look up single nucleotide polymorphism? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a typical or ideal example

Get Word of the Day daily email!

Test Your Vocabulary

Find the Cousins

  • a-large-tree-with-many-branches
  • Which pair shares a common word ancestor?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!