Asked by: Iruña Pehotinasked in category: General Last Updated: 31st January, 2020
What is genomic imprinting example?
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Similarly, it is asked, which of the following is an example of genomic imprinting in humans?
These include Prader-Willi and Angelman syndromes (the first examples of genomic imprinting in humans), Silver-Russell syndrome, Beckwith-Weidemann syndrome, Albright hereditary osteodystrophy and uniparental disomy 14 [1, 2]. However, the monoallelic expression of an imprinted gene is not absolute.
Secondly, is genomic imprinting normal? Often, genomic imprinting results in a gene being expressed only in the chromosome inherited from one or the other parent. While this is a normal process, when combined with genomic mutations, disease can result.
Subsequently, question is, how does genomic imprinting occur?
Genomic imprinting. In genes that undergo genomic imprinting, the parent of origin is often marked, or “stamped,” on the gene during the formation of egg and sperm cells. This stamping process, called methylation, is a chemical reaction that attaches small molecules called methyl groups to certain segments of DNA.
What is paternal imprinting?
Maternal imprinting means that the allele of a particular gene inherited from the mother is transcriptionally silent and the paternally- inherited allele is active. Paternal imprinting is the opposite; the paternally-inherited allele is silenced and the maternally-inherited allele is active.