Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

MADAM and sir

  1. Jun 8, 2004 #1
    What is is single-nucleotide polymorphism ?
    TIA
     
  2. jcsd
  3. Jun 8, 2004 #2

    iansmith

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    Variations of single base pairs scattered throughout the human genome that serve as measures of the genetic diversity in humans. About 1 million SNPs are estimated to be present in the human genome, and SNPs are useful markers for gene mapping studies.

    http://www.geneed.com/glossary/s/index.html
     
  4. Jun 8, 2004 #3

    Janitor

    User Avatar
    Science Advisor

    When you say a million in the genome, does that include ones in the so-called junk DNA?
     
  5. Jun 9, 2004 #4

    Monique

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    That would mainly include junk DNA since only 3-5% of our DNA is coding. A variation is only considered a SNP if it occurs in at least 1% of a population. SNPs make up 90% of all human genetic variation. Actually nearly 1.8 million SNPs have been characterized by the SNP consortium :)
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?