UNIT 07 : EVOLUTION

Evolution is one of the conceptually rich chapters in MDCAT Biology, sitting within the 45% Biology allocation of your 81-question paper.

What this chapter covers:

• Concept of evolution and origin of life
• Lamarckism (theory of inheritance of acquired characters)
• Darwinism (theory of natural selection)

These subtopics are almost entirely concept-based rather than calculation-heavy, though the Hardy-Weinberg theorem introduces numerical application that requires careful formula handling. The chapter spans a wide range of named scientists, mechanisms, evidences, and comparisons, placing the bulk of its questions in the moderate difficulty band, with the harder questions testing your ability to distinguish between closely related mechanisms or apply Hardy-Weinberg calculations accurately.

Why this practice set helps:

• Covers every subtopic the PMDC curriculum identifies, plus the supporting concepts textbooks present alongside them, including biogeography, comparative anatomy, molecular biology evidence, endosymbiotic theory, Neo-Darwinism, genetic drift, gene flow, speciation types, and the contributions of key scientists
• Every question includes a full explanation of why the correct answer is right and why each other option is wrong
• Built to help you learn faster than passive reading, with nothing the exam may draw from left untouched

Work through this set attentively, and you build the conceptual clarity and memorization precision this chapter demands, particularly in keeping the mechanisms of Lamarckism and Darwinism, the conditions and terms of Hardy-Weinberg equilibrium, and the evidence categories for evolution clearly separated in your mind.