-A Space Probe Returns with a Culture of a Microorganism

question 37

Multiple Choice

-A space probe returns with a culture of a microorganism found on a distant planet. Analysis shows that it is a carbon-based life-form that has DNA. You grow the cells in ¹⁵N medium for several generations and then transfer them to ¹⁴N medium. Which pattern in the figure above would you expect if the DNA was replicated in a conservative manner?

• A) A
• B) B
• C) C
• D) D
• E) E

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Definitions:

Self-Interest

Acting based on the benefits one can derive for themselves, often considered in economic and psychological contexts as a primary motivator for human behavior.

Family

A socially recognized group typically joined by blood, marriage, co-residence, or adoption, forming an emotional and economic unit of society.

Kohlberg

Refers to Lawrence Kohlberg, a psychologist known for his theory of stages of moral development.

Moral Violations

Acts or behaviors that transgress established moral principles or ethical standards.