Problem: Which of the following is an example of genomic imprinting in humans? A) The material and paternal alleles of a gene pair are both expressed. B) Human males have only one Y-chromosome and one X-chromosomeC) One of the two X-chromosomes in females is randomly expressed and the other is repressed. D) In some allele pairs, only the paternal sourced allele is expressed, and in others, only the maternal sourced allele is expressed.E) A random pattern of autosomal allele inactivation is observed. 

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Genomic Imprinting: epigenetic phenomenon that causes genes to be expressed in a parent-of-origin-specific manner

: alleles from both parents are differently expressed rather than complete expression/suppression of allels

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Problem Details

Which of the following is an example of genomic imprinting in humans? 

A) The material and paternal alleles of a gene pair are both expressed. 

B) Human males have only one Y-chromosome and one X-chromosome

C) One of the two X-chromosomes in females is randomly expressed and the other is repressed. 

D) In some allele pairs, only the paternal sourced allele is expressed, and in others, only the maternal sourced allele is expressed.

E) A random pattern of autosomal allele inactivation is observed. 

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