MDCAT Biology MCQ #3611

A fossil record shows a sudden appearance of complex life forms. What theory explains this pattern?

MDCAT Biology MCQ #3611

  1. Question 1

    Q1. A fossil record shows a sudden appearance of complex life forms. What theory explains this pattern?

    • A) Punctuated equilibrium
    • B) Gradualism
    • C) Cambrian explosion
    • D) Mass extinction

    Answer: Cambrian explosion

    Explanation: Cambrian explosion theory explains sudden appearance of complex life, unlike gradualism.