Interpreting this figure, Which of the following is a similarity between Lamark's proposal for evolution and that of Darwin?
A) Both scenarios begin with a population of giraffes that contains variation.
B) Both scenarios expose the giraffes to an environmental pressure (or challenge).
C) Both scenarios involve only an individual, not a population.
D) Both scenarios involve differential reproductive success.
E) Both scenarios involve giraffes of equal fitness.

Question

Interpreting this figure, Which of the following is a similarity between Lamark's proposal for evolution and that of Darwin?
A) Both scenarios begin with a population of giraffes that contains variation. 
B) Both scenarios expose the giraffes to an environmental pressure (or challenge). 
C) Both scenarios involve only an individual, not a population. 
D) Both scenarios involve differential reproductive success. 
E) Both scenarios involve giraffes of equal fitness.

Quizplus · Accepted Answer

Lamark's idea of evolution involved individuals that changed form throughout their lifetimes to adapt to an environmental pressure. Darwin's idea of evolution involved populations that contain variation. Those individuals with favorable traits are better at surviving an environmental challenge and subsequently reproduce more than individuals lacking such traits. However, adapting to an environmental challenge is common in both concepts.

Interpreting This Figure, Which of the Following Is a Similarity