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• n  (genetics) genetic variation in a DNA sequence that occurs when a single nucleotide in a genome is altered; SNPs are usually considered to be point mutations that have been evolutionarily successful enough to recur in a significant proportion of the population of a species

• SNP

News & Articles

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• Cocaine, meth response differ between two substrains of lab mice
  Researchers have found a single nucleotide polymorphism difference in cocaine and methamphetamine response between two substrains of the C57BL/6 or "Black 6" inbred laboratory mouse, pointing to Cyfip2 as a regulator of cocaine response with a possible role in addiction.
  Dec. 20, 2013 - Science Daily
• Cocaine, meth response differ between 2 substrains of 'Black 6' laboratory mouse
  ( Jackson Laboratory ) Researchers including Jackson Laboratory Professor Gary Churchill, Ph.D., have found a single nucleotide polymorphism difference in cocaine and methamphetamine response between two substrains of the C57BL/6 or "Black 6" inbred laboratory mouse, pointing to Cyfip2 as a regulator of cocaine response with a possible role in addiction.
  Dec. 19, 2013 - EurekAlert!