1. DNA and Molecular Genetics DNA structure Replication Gene concept Transcription Translation Uses Evidence Life cycle

2. Evidence Rough Smooth Bacteria Rough Heated Smooth Heated Smooth Heat to 60 o C bacteria died Smooth bacteria cause mouse die Rough bacteria no change

3. Rough Heated Smooth Heated Smooth Heated Smooth Rough Heated smooth bacteria mixed with rough can cause mouse dead Some things transmit to rough.

4. Life cycle of Bacteriophage

5. ANIMATION

7. DNA Structure

8. Nucleic Acids Phosphate Ribose base Adenine GuanineCytosineThymine Purine Pyrimidine

9. Nucleic Acid

10. ATGC combination

11. During cell division, DNA must reproduce itself, so that all genetic information can be transferred to daughter cells. There are three hypothesis about DNA replication. DNA Replication

12. Experiment Semiconservative Replication

13. Replication mechanism ANIMATION

14. Gene concept Gene is a sequence of DNA. Each chromosome contains a lot of gene. Each gene control a characteristic. So each chromosome may control a lot of gene.

17. How do gene control characteristic? Gene is a sequence of DNA which contain genetic information. A messenger transports the information out the nucleus. The messenger is read by ribosome and transform to protein as building block of our body. The messenger is messenger RNA. Transcription

18. ANIMATION

20. How do mRNA work?

21. Translation

22. tRNA

23. Translation

24. ANIMATION

25. Code of codon

26. Whole Process

27. Use of DNA technology Use of DNA technology Funny Website Funny Website