Practice IB Biology Topic 3.1 Genes with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for 3.1 Genes and mirrors Paper 1A, 1B, 2 style where relevant.
Get instant solutions, detailed explanations, and build confidence with questions aligned to IB examiner expectations.
Which statement defines alleles?
John Cairns used the technique of autoradiography to produce photographs of DNA from the bacterium E. coli.
Which conclusion was drawn from his experiments?
What is a difference between two alleles of a gene?
What does the universal nature of the genetic code allow?
How many genotypes can be made from a gene which has three alleles?