Long answer·Hard exam skill (4/5)·No calculator
Difficulty guide
The label describes the problem, not your ability.
1/5 - Foundational
Warm-up setup; checks one basic idea.
2/5 - Routine exam skill
Normal syllabus skill; usually one main rule or interpretation.
3/5 - Standard multi-step
Exam-style problem with multiple steps or a common trap.
4/5 - Hard exam skill
High-end exam problem; combines methods carefully.
5/5 - Challenge
Stretch problem beyond normal exam pressure.
Question
Mendel found that a trait hidden in the first generation can reappear in the second generation. Explain this using a monohybrid cross.
Total: 6 marks
(a) Use a pure tall and pure dwarf cross to describe the first generation. (2 marks)
(b) Show how the recessive trait reappears in the second generation. (3 marks)
(c) State the conclusion about traits or alleles. (1 mark)
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