Across
- 2. always expressed
- 9. different alleles
- 11. nitrogenous base that pairs with adenine
- 12. shape of DNA
- 13. cell creates RNA copy of a specific DNA sequence
- 14. process that changes mRNA into amino acids
- 16. cross for two traits
- 17. carries genetic information
- 19. chromosomes unwind,spindle breaks down(stage 4)
- 20. chromatids pulled apart (stage 3)
- 21. nitrogenous base that pairs with cytosine
- 22. nitrogenous base that pairs with thymine
- 24. only expressed if both alleles are present
- 27. Same alleles
- 28. links sugar and base molecules of nucleotide together
- 30. type of sugar key to DNA
Down
- 1. two structures fit together perfectly
- 3. single unit that makes up DNA
- 4. cross for a single trait
- 5. stage that prepares for cell division
- 6. cell division,results in two identical cells
- 7. division of cytoplasm
- 8. random change in the sequence of a gene
- 10. single stranded version of DNA
- 15. molecules that carry genetic information
- 18. process where cells create amino acids
- 23. chromosomes line up in middle (stage 2)
- 25. nitrogenous base that pairs with guanine
- 26. cell growth phases
- 29. nucleus disappears(stage 1)