Genetic imprinting is a rather mysterious phenomenon which has become somewhat better understood in the last few years. Essentially, what it refers to is the chemical modification of a DNA sequence.
Imprinting
If newly-hatched geese are exposed to a moving object of reasonable size and emitting reasonable sounds, they will begin to follow it just as they would normally follow their mother.
Imprinting Patterns of inheritance affected by whether the inheritance was from the mother or father.
Imprinting The differential expression of genes depending on whether they were inherited maternally or paternally.
Imprinting A phenomenon in which the disease phenotype depends on which parent passed on the disease gene. For instance, both Prader-Willi and Angelman syndromes are inherited when the same part of chromosome 15 is missing.
Imprinting
Phenomenon in which an allele at a given locus is altered or inactivated depending on whether it is inherited from the mother or father. Implies a functional difference in genes inherited from the 2 parents.
Related Terms:
Allele ...
imprinting A process that occurs when an animal learns to make a particular response to only one type of animal or object.
Genomic imprinting (which is "epigenetic") constitutes heritability that is not coded in DNA. Evolution is prevalent also in viruses, although these are not considered to be organisms. The genetic material in viruses may consist of DNA or RNA.
4.1 Genomic imprinting and related disorders
4.2 Transgenerational epigenetic observations
4.3 Cancer and developmental abnormalities
5 Epigenetics in microorganisms
6 See also
7 Further reading
8 Notes and references
9 External links ...
The gene imprinting occurs by the addition of methyl groups to the DNA of the silenced gene, preventing transcription of the gene.
Non-traditional inheritance: mosaicism, microdeletion syndromes, uniparental disomy, genomic imprinting, trinucleotide repeats, mitochondrial disorders
The events in sexual development and some genetic abnormalities ...
Shows imprinting individuals inheriting HD from their father show significantly earlier onset than those inheriting a maternal allele.
A hereditary mental disorder, partially explained by genomic imprinting and the addition of nucleotides to a triplet repeat near the end of an X chromosome.
frameshift mutation ...
Epigenetic phenomena such as imprinting and paramutation violate Mendelian principles of heredity.
Mental problems are more common if the fragile X is inherited from the mother. This is an example of genomic imprinting discussed in the previous chapter. Fragile-X is more common in males because males inherit their X chromosome from their mother.
6. A hardened steel roller having a design in relief, used for imprinting a reversed copy of the design in a softer metal, as copper.
Imprinting -- a chemical modification of a gene allele which can be used to identify maternal or paternal origin of chromosome.
 See also: Trans, Human, Gene, Organ, Chromosome
  
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