Across
- 2. replaces thymine in RNA
- 4. wall rigid outer layer of a plant cell
- 7. threadlike structure of DNA
- 8. a change in the genetic code
- 9. genetic makeup of a particular organism
- 13. how many nitrogen bases does RNA and DNA have
- 14. Gregory Mendel introduced what
- 15. bone described as an elbow for humans
- 16. cell division that produces reproductive cells
- 18. allele completely hides the effects of a recessive allele.
- 19. apart of the cell growth and reproduction
Down
- 1. dissolving substances in a solution
- 3. a substance used to kill microorganisms and cure infections
- 5. specific sequence of three adjacent nucleotides on a strand of DNA or RNA
- 6. internal skeleton
- 7. green pigment found in photosynthetic organisms
- 10. change over time
- 11. how many main types of RNA are there
- 12. ancestry of an individual
- 17. codes for everything in a cell