Question

Which of the following(s) is/are true about Lamarckism?

• A. Changing environment creates new requirements for survival.
• B. Body drives efforts to bypass the new needs.
• C. Acquired characters are inheritable.
• D. Acquired characteristics over time leads to speciation.

Answer 1

Answer: (A), (C), (D)

The correct options are
A Changing environment creates new requirements for survival.
C Acquired characters are inheritable.
D Acquired characteristics over time leads to speciation.

Lamarckism is summarised as follows:

• Evolution is influenced by two innate forces.
• Changing environment creates new needs.
• Innate forces drive efforts to fulfill the new needs.
• Acquired characters are inheritable.
• Acquired characteristics over time leads to speciation.

The most popular example of Lamarckism is the increase in the length of giraffe's neck.