One in 25 Caucasians Is a Carrier for the Defective

question 67

Multiple Choice

One in 25 Caucasians is a carrier for the defective CFTR gene,making it the most common genetic disease in this population.Why would the frequency of defects in CFTR be so common in this population?

• A)Carriers with one copy of the defective CFTR gene have decreased resistance to cholera compared to those with no defective copies
• B)These individuals were exposed to cholera, causing mutations in their CFTR gene that can then be passed on to their children
• C)Carriers will be more likely to have children who develop cystic fibrosis
• D)Carriers with one copy of the defective CFTR gene have increased resistance to cholera compared to those with no defective copies
• E)Only carriers would be able to survive exposure to cholera

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Definitions:

Equity Method

An accounting technique used to record investments in other companies where the investor has significant influence but not full control.

Amortization

The process of gradually writing off the initial cost of an intangible asset over its useful life.

Acquisition Differential

The gap between the acquisition cost of a company and the fair value of its clearly identifiable net assets.

Impairment

A decrease in the recoverable value of an asset below its carrying amount, leading to an adjustment in the value recorded on financial statements.