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6. Which characteristic shows continuous variation?
7. Which characteristic shows discontinuous variation?
- Weight
- Blood group
- Foot length
8. Which statement about inheritance is correct?
- The nucleus of a cell contains chromosomes, which carry genes
- The nucleus of a cell contains genes, which carry chromosomes
- The cytoplasm of a cell contains chromosomes, which carry genes
9. Which statement about the effects of mutation is correct?
- Some mutations are beneficial
- All mutations cause some effect
- All mutations are harmful
10. What type of factor is involved in determining body mass?
- Both environmental factors and inherited factors
- Inherited factors only
- Environmental factors only