Question detail
Which option best identifies the exact concept boundary for Variation and evolution, Variation: students must describe that most mutations have no effect on phenotype, some influence phenotype, and very few determine phenotype.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Variation and evolution
Question
- A. Definition boundary: Mitosis produces identical cells; meiosis produces genetically different gametes. This matches Variation because students must describe that most mutations have no effect on phenotype, some influence phenotype, and very few determine phenotype.
- B. Scale confusion: Claiming mitosis produces gametes. This would blur Mitosis vs meiosis instead of testing Variation.
- C. Process confusion: Forgetting chromosome number is maintained in mitosis but halved in meiosis. This misses the objective focus on describe that most mutations have no effect on phenotype, some influence phenotype, and very few determine phenotype.
- D. Evidence confusion: It moves into a neighbouring Unit 4.6 idea rather than Variation and evolution / Variation.
Answer
The correct option is Definition boundary: Mitosis produces identical cells; meiosis produces genetically different gametes. This matches Variation because students must describe that most mutations have no effect on phenotype, some influence phenotype, and very few determine phenotype.. It is the only option that keeps Mitosis vs meiosis separate and answers the approved learning objective in Variation.
Explanation
The correct option is Definition boundary: Mitosis produces identical cells; meiosis produces genetically different gametes. This matches Variation because students must describe that most mutations have no effect on phenotype, some influence phenotype, and very few determine phenotype.. Definition boundary: Mitosis produces identical cells; meiosis produces genetically different gametes. This matches Variation because students must describe that most mutations have no effect on phenotype, some influence phenotype, and very few determine phenotype. is correct because Mitosis produces identical cells; meiosis produces genetically different gametes. The learning objective says students must describe that most mutations have no effect on phenotype, some influence phenotype, and very few determine phenotype, so the answer must stay inside Variation. The alternative options are wrong because they either claiming mitosis produces gametes., forgetting chromosome number is maintained in mitosis but halved in meiosis., or drift away from meiosis questions must focus on gametes, halved chromosome number, sexual reproduction, or variation..
Common mistake
Variation common mistake 1
Giving a vague answer instead of directly addressing: Describe that most mutations have no effect on phenotype, some influence phenotype, and very few determine phenotype..
Answer by clearly explaining how to describe that most mutations have no effect on phenotype, some influence phenotype, and very few determine phenotype..
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