Which Technique Is Used to Create Billions of Copies of DNA

question 30

Multiple Choice

Which technique is used to create billions of copies of DNA in a short amount of time?

• A) polymerase chain reaction
• B) recombinant DNA technology
• C) short tandem repeat (STR) profiling
• D) gene therapy
• E) None of the answer choices is correct.

---

Definitions:

Gross Profit Rate

A financial metric that measures the difference between sales and the cost of goods sold, expressed as a percentage of sales.

Merchandise Inventory

The goods a company holds for the purpose of resale to customers.

Customer Refunds Payable

A liability account for estimated refunds and allowances that will be paid or granted customers in the future.

Merchandise Returns

Goods returned by the buyer to the seller, often due to defects, wrong size, or dissatisfaction.