The study of mechanisms involved in the production of phenotypic complexity in morphogenesis. According to the epigenetic view of differentiation, the cell makes a series of choices (some of which may have no obvious phenotypic expression, and are spoken of as determination events) that lead to the eventual differentiated state. Thus, selective gene repression or derepression at an early stage in differentiation will have a wide-ranging consequence in restricting the possible fate of the cell.
Dictionary of molecular biology. 2004.
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Epigenetics — In biology, the term epigenetics refers to changes in gene expression caused by mechanisms other than changes in the underlying DNA sequence. These changes may remain through cell divisions for the remainder of the cell s life and may also last… … Wikipedia
epigenetics — Introduction the study of the chemical modification of specific genes (gene) or gene associated proteins of an organism. Epigenetic modifications can define how the information in genes is expressed and used by cells (cell). The term epigenetics … Universalium
epigenetics — noun a) The study of the processes involved in the genetic development of an organism, especially the activation and deactivation of genes. Epigenetics deals with the regulation of genetic activity within a cell which genes are switched on or off … Wiktionary
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epigenetics — /ɛpidʒəˈnɛtɪks/ (say epeejuh netiks) noun Biology 1. the science that studies changes in the way a gene functions that are heritable but that occur without altering the DNA sequence, that is, changes that affect the phenotype without changing the … Australian English dictionary
epigenetics — epigenetˈics singular noun The science which studies the causes at work in development • • • Main Entry: ↑epigenesis … Useful english dictionary
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