Prader- Willi syndrome is a genetic disorder involving a partial deletion of chromosome 15q on the paternal chromosome. When both copies of a gene (or chromosome) are functional but only one is expressed, this is an example of __________ .

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Genomic imprinting is the process by which only one allele of a gene is expressed while the other is silenced, depending on whether the allele is inherited from the mother or the father. Prader-Willi syndrome is an example of a disorder that results from the loss of function of paternally expressed genes due to genomic imprinting.

Prader- Willi Syndrome Is a Genetic Disorder Involving a Partial