Why Does a Person Who Has a Deletion of the Coding

question 12

Multiple Choice

Why does a person who has a deletion of the coding regions for five genes on one chromosome 15 have some manifestations or overt problems?

• A)The deletions occurred in an autosome and not in a sex chromosome.
• B)He or she has only one copy of the gene alleles, which results in reduced function.
• C)The overall expression of the deleted areas is the same as if trisomy 15 were present.
• D)The deleted areas are introns rather than exons; thus, no compensation occurred on the homologous chromosome.

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