A plant with purple flowers and round leaves (heterozygous for both traits) is self-crossed.
(d) Name the principle illustrated by the independent assortment of these two genes. (1 mark) singapore junior biology olympiad past papers
(b) Using a Punnett square or branch diagram, determine the phenotypic ratio of the offspring. (4 marks) A plant with purple flowers and round leaves
Below is a structured set of original questions (Section A: Multiple Choice, Section B: Structured/Free Response), followed by a detailed answer key and performance analysis guide. Subject: Junior Biology Olympiad Time: 1 hour 30 minutes (simulated) Total Marks: 60 Section A: Multiple Choice (30 marks) Questions 1 to 15. Each correct answer earns 2 marks. Select the single best answer. (4 marks) Below is a structured set of
(a) List two structural adaptations of the alveolus that maximize gas exchange. (2 marks)
(d) If the experiment used germinating mung beans instead of crickets, how would the results differ? Why? (2 marks)
The diagram (described in text) shows a cross-section of a human lung alveolus and a fish gill filament.