Practice IB Biology Topic D3.2 Inheritance with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for D3.2 Inheritance and mirrors Paper 1A, 1B, 2 style where relevant.
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Two genetically identical mice are raised in different environments. One develops faster and is more aggressive. What does this phenomenon suggest?
The Punnett square represents a cross between a red-flowered plant () and a white-flowered plant (), producing all heterozygous offspring () with pink flowers.
If an heterozygote () self-pollinates, what is the expected phenotypic ratio?
Two phenotypically normal parents have a child with a rare disorder. What conclusion is most likely?
Inheritance patterns follow predictable rules. Answer the following questions about inheritance and genetic patterns.
Distinguish between genotype and phenotype.
Describe how a Punnett square can be used to determine the probability of inheritance of a trait.
Explain how the inheritance of sex-linked traits differs from autosomal traits.
Why are males with an X-linked recessive allele either affected or unaffected, and therefore not unaffected carriers?