Define epigenetics. epigenetics synonyms, epigenetics pronunciation, epigenetics translation, English dictionary definition of epigenetics. n. The study of heritable changes in gene expression that are caused by factors such as DNA methylation rather tha
Define epigenist. epigenist synonyms, epigenist pronunciation, epigenist translation, English dictionary definition of epigenist. n. 1. Biology The theory that an individual is developed by successive differentiation of an unstructured egg rather than by
The definition of “epigenetics” is heavily debated116,117. Here, we use the word “epigenetic” to imply the molecular mechanism of heritable gene expression changes that cannot be attributed to changes in DNA sequence information. Unlike epigenetics, which implies the mechanism, the epigenome desc...
The original definition of epigenetics incorporates inheritable but reversible phenomena that affect gene expression without altering base pairs. Even though not all of the above listed epigenetic traits have demonstrated heritability, they can all alter gene transcription without modification to the ...
cited as the first definition of epigenetics by Conrad Waddington, namely the study of the mechanisms by which the genotype produces the phenotype in the context of development2. The maintenance phase often involves a plethora of non-DNA sequence specific chromatin cofactors that set up and ...
Definitionof an Allergen (Immunobiology) 1. Atopy is clinically definedas an inflammatory condition resulting from an allergenproducing an adverse immune reaction. 2. Allergens/antigens have twoproperties: (1) immunogenicity (i.e., the capacity to stimulate the formationof the corresponding antibody ...
Variations in phenotype reflect the influence of environmental conditions during development on cellular functions, including that of the genome. The recent integration of epigenetics into developmental psychobiology illustrates the processes by which environmental conditions in early life structurally alter DNA...
This relationship was first studied and published in 1949, 14 years after the first definition of PCOS by Freiler Stein and Michael Leventhal. It has also been reported that anovulatory women with PCOS, who have endometrial lining thickness > 7 mm or amenorrhea more than 3 months, are 8.7% ...
An operational definition of epigenetics. Genes Dev. 23, 781–783 (2009). Article CAS PubMed PubMed Central Google Scholar Wong, A. H., Gottesman, I. I. & Petronis, A. Phenotypic differences in genetically identical organisms: the epigenetic perspective. Hum. Mol. Genet. 14 (Suppl. 1)...
Define Epigee. Epigee synonyms, Epigee pronunciation, Epigee translation, English dictionary definition of Epigee. n. 1. See Perigee. Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co