|
|
|||
|
|
||||
|
Paramutation
Refers to an epigenetic phenomenon via which the "instructions" (in the form of expressed RNA) of a given allele (i.e. one specific version of a particular gene) are executed in subsequent generation(s) of the organism, when that allele itself has not been inherited by that subsequent-generation. During 2005, researchers discovered that in the plant Arabidopsis thaliana, alleles of a gene known as HOTHEAD can be completely absent from the plant's DNA in one generation, but then reappear in that plant (offspring's) DNA in the next generation. During 2008, Karl F. Erhard Jr. and colleagues discovered that RMR6 gene (which is required for paramutation in the maize plant) is itself an RNA polymerase (Pol IV).
|
|
|
| preface | about the author | order the book | knowledge center | search |
|
Contact Us |