AP Biology Unit 5: Heredity

Unit 5: Heredity — Comprehensive Study Guide Unit 5 is the bridge between the molecular biology of Unit 6 and the evolutionary biology of Unit 7. It is the AP Bio unit where information flow at the cellular level (meiosis) becomes statistical outcomes at the organismal level (Mendelian ratios) — and where those statistics get messy because real biology doesn't always match Mendel's pea plants. Expect ~8–11% of the MCQs and at least one long FRQ on this material. 💡 Exam Tip: Heredity FRQs almost always ask you to (1) predict a ratio, (2) justify it mechanistically using meiosis, and (3) evalua…