Mutations Can Also Occur Within the Regulatory Regions of Genes

question 32

Multiple Choice

Mutations can also occur within the regulatory regions of genes. Fragile X is an example of a disorder caused by one such mutation that increases the length of the long arm of the X chromosome and ultimately decreases mRNA stability. Which type of regulatory mutation causes Fragile X?

• A)promoter
• B)polyadenylation
• C)splice site
• D)triplet-repeat expansion
• E)frameshift

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