Genomic imprinting is a mechanism for regulating gene expression that allows expression of only one of the parental alleles, although both alleles are functional. Unlike most genes in which expression is biallelic, genes that are subjected to this mechanism (imprinted genes) have monoalelic expression; By definition, in an imprinted loci, only one allele is active (maternal or paternal), and the inactive is epigenetically marked by histonic modification and / or methylation of cytosines.

Genomic imprinting can cause some disturbances, among them Prader-Willi syndrome, which is a genetic disorder that involves a partial deletion of chromosome 15q on the paternal chromosome.

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3 years ago

The kidney is referred to as an excretory organ because it excretes __1__ wastes. it is also a major homeostatic organ because i

cricket20 [7]

The answers are
1. nitrogenous
2. acid-base
3. fluid

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3 years ago

In 1900 more than 30 percent of deaths in the U.STILL were caused by infectious disease. In 2005 what percent of deaths were cau

bogdanovich [222]

C. Less than 5% because technology had been formed and better perfomances to treated the infectious diaeas

8 0

3 years ago