Across
- 3. a section of DNA that codes for a particular characteristic
- 6. A sudden random change in the base sequence of DNA
- 7. Having two different alleles for a particular gene
- 10. deoxyribonucleic Acid
- 12. made up of DNA, found in the nucleus of a cell
- 13. Ovum and sperm in animals or ovule and poolen grain in plants
- 15. physical characteristics produced by a particular genotype
- 16. Alternative version of a gene that has different base sequences
Down
- 1. Combination of two alleles for a particular gene
- 2. Opposite to dominant
- 4. The difference between individuals in a population
- 5. Having two identical alleles for a particular gene
- 8. a distinctive feature of an organism
- 9. one of the four chemicals which make up the 'rungs' of DNA
- 11. Allele that is always expressed regardless of other allele
- 14. the structural and functional unit all living organisms