How Did Fred Griffith Contribute to Our Understanding of DNA

question 69

Multiple Choice

How did Fred Griffith contribute to our understanding of DNA?

• A) used X-ray diffraction to examine the structure of DNA
• B) determined that DNA contains four different nitrogenous bases
• C) found that "the transforming principle" is destroyed by enzymes that hydrolyze DNA
• D) found that the phosphorus-containing components are the genetic material of phages
• E) discovered "the transforming principle" that could genetically alter bacteria

---

Definitions:

Cumulative Preferred Stock

A type of preferred stock where dividends accrue if not paid in a given year, and all accrued dividends must be paid before dividends can be paid on common stock.

Dividends

A portion of a company's earnings that is paid to shareholders, usually on a quarterly basis.

Common Shareholders

Individuals or entities that own a portion of a company's equity through its common shares, giving them voting rights and a claim on a portion of its profits.

Payout Ratio

The proportion of earnings paid out as dividends to shareholders, typically expressed as a percentage of the company's total net income.