Variation and Mutation Quiz
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5 questions, one answer each
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1. What are the three possible causes of variation?
- A. Only genes
- B. Only environment
- C. Genes, environment, or a combination
- D. Mutation rate alone
2. What is the ultimate source of all genetic variants?
- A. Diet
- B. Mutations
- C. Selective breeding
- D. Cell division
3. Which statement about mutations is correct?
- A. All mutations are harmful
- B. Most mutations have no effect on phenotype
- C. All mutations determine phenotype
- D. Mutations only occur in asexual reproduction
4. Which type of reproduction produces genetically identical offspring?
- A. Sexual reproduction
- B. Asexual reproduction
- C. Both equally
- D. Neither
5. A mutation occurs in a region of non-coding DNA. Which outcome is possible? (HT)
- A. It can never have any effect since it doesn't code for protein
- B. It could affect phenotype by altering how a gene is switched on or off
- C. It always destroys the associated protein
- D. It converts the DNA into RNA permanently