epigenetic
adjective
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Definition of epigenetic
1a : of, relating to, or produced by the chain of developmental processes in epigenesis that lead from genotype to phenotype after the initial action of the genes
b : relating to, being, or involving changes in gene function that do not involve changes in DNA sequence epigenetic inheritance
2 of a deposit or structure : formed after the laying down of the enclosing rock
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Examples of epigenetic in a Sentence
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But considering that advanced epigenetic technology has already begun trickling down into the skincare market, these most recent findings may well be a strong harbinger of what's to come in the pursuit of eternal youth. — Lauren Valenti, Vogue, "Scientists Have Found a Way to Reverse Wrinkles and Hair Loss, According to an "Unprecedented" New Study," 23 July 2018 The team hope to spot epigenetic patterns that will both give away those cells which are infected and help explain how HIV genes in a cell’s nucleus are activated and deactivated. — The Economist, "HIV+ volunteers are bequeathing their organs to a new project," 31 May 2018 The team found that these early signs of handedness appear to be linked to lopsided epigenetic activity: chemical changes that effectively turn certain genes on or off without altering the DNA sequence itself. — Gemma Tarlach, Discover Magazine, "Was Science Wrong About Being Right?," 18 May 2018 The epigenetic benefits from running ended when the running did. — Gretchen Reynolds, New York Times, "Do Fathers Who Exercise Have Smarter Babies?," 9 May 2018 But epigenetic effects might be treatable, by boosting levels of particular micro-RNAs in sperm, for example. — The Economist, "How stress echoes down the generations," 24 May 2018 The research is preliminary, however, and scientists have not identified what causes these epigenetic changes. — Gemma Tarlach, Discover Magazine, "Was Science Wrong About Being Right?," 18 May 2018 Glanzman’s lab and others have also shown that long-term memory formation can be blocked by preventing epigenetic changes, even when synapse formation or strengthening is not altered. — Usha Lee Mcfarling, STAT, "Memory transferred between snails, challenging standard theory of how the brain remembers," 14 May 2018 So this time the Chinese team deployed two critical enzymes that removed genes’ epigenetic memory of being somatic cells (cells that make up tissues and organs). — Dina Fine Maron, Scientific American, "First Primate Clones Produced Using the “Dolly” Method," 24 Jan. 2018These example sentences are selected automatically from various online news sources to reflect current usage of the word 'epigenetic.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
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epigenetic
adjective
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Medical Definition of epigenetic
1 : of, relating to, or produced by epigenesis the epigenetic nature of vertebrate development
2 : relating to, being, or involving a modification in gene expression that is independent of the DNA sequence of a gene epigenetic carcinogenesis epigenetic inheritance Methylation is one of many epigenetic signals—chemical changes to DNA and its associated proteins—that modify gene activity without altering the genetic information itself.— Tina Hesman Saey, Science News, 14 Feb. 2009
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