Jean-Baptiste Lamarck Hypothesized That Changes Acquired During the Lifetime of an Individual

question 17

Multiple Choice

Jean-Baptiste Lamarck hypothesized that changes acquired during the lifetime of an individual organism, as a result of adapting to its environment, are passed on to progeny. Why was this incorrect but still important?

• A) Acquired traits are heritable, but not part of the genetic makeup of the organisms. Lamarck's idea was important because he was the first to propose a process for evolutionary change.
• B) Acquired traits are not heritable, but Lamarck's idea was important because he verified Darwin's process of natural selection.
• C) Acquired traits are not heritable, but Lamarck's idea was important because he was the first to propose a process for evolutionary change.
• D) Acquired traits are heritable, and Lamarck's idea was important because he proved Darwin's idea of variational evolution was incorrect.

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Definitions:

Studying

The act of devoting time and attention to acquiring knowledge on a subject, especially through reading and analyzing material.

Pons

A part of the brainstem that plays a key role in controlling breathing, communication between different parts of the brain, and sensations such as hearing.

Regulates Thirst

The physiological process that maintains hydration in the body by triggering the sensation of thirst.

Limbic System

A complex system of nerves and networks in the brain, involved in basic emotions (such as fear and pleasure) and drives (such as those for food and sex).