Singapore Junior Biology Olympiad Past Papers May 2026

(e) Describe one real-world application of Mendelian genetics in agriculture. (2 marks)

(b) Using a Punnett square or branch diagram, determine the phenotypic ratio of the offspring. (4 marks) singapore junior biology olympiad past papers

(a) List two structural adaptations of the alveolus that maximize gas exchange. (2 marks) singapore junior biology olympiad past papers

In Arabidopsis thaliana , flower color is controlled by a single gene with two alleles: Purple (P) dominant over white (p). Another unlinked gene controls leaf shape: Round (R) dominant over pointed (r). singapore junior biology olympiad past papers