Ib Biology Genetics Question Bank [repack] Link

Use the official IB mark scheme. The IB is pedantic.

IB Biology Genetics Question Bank for the 2025 syllabus update focuses on Theme D: Continuity and Change

: Solving crosses for codominance (e.g., palomino horses ), sex-linked traits like hemophilia or color blindness, and multiple alleles. Ib Biology Genetics Question Bank

Key Tip: Be able to draw or label diagrams showing chiasmata formation. 2. Mendelian Genetics & Punnett Squares You must be fluent in monohybrid and dihybrid crosses.

: Calculating recombinant frequencies and understanding Thomas Hunt Morgan’s work with Drosophila . Use the official IB mark scheme

As your final exams approach, stop using the question bank for individual topics. Instead, curate a mock exam. Select a random mix of genetics questions—some calculation-heavy, some definition-based, and one long essay question. Attempt this in one sitting (approx. 45-60 minutes) to build stamina and time management skills.

trait influenced by multiple genes and environmental factors. Calculation Step: Monohybrid Test Cross Key Tip: Be able to draw or label

Focus on dominant/recessive traits, co-dominance (blood types), and sex-linkage (hemophilia and color blindness).