1. Homework #1 due 2/7
Bonus #1 due 2/28

2. The relationship between DNA and genes
a gene - DNA used to produce RNA or protein
promoter
coding region
terminator
non-gene
DNA

3. Five Perspectives about Genes:
Genes act as units of heredity
Genes are seen as a cause of disease
Genes code for proteins
Genes act as switches, controlling development
Genes are replicators (selfish gene)

4. Visualizing the perspectives about genes
CB 16.2
Visualizing the perspectives about genes
Different strains of bacteria are injected into mice.

5. Visualizing the perspectives about genes
CB 16.2
Visualizing the perspectives about genes

6. Visualizing the perspectives about genes
CB 16.2
Visualizing the perspectives about genes

7. Visualizing the perspectives about genes
CB 16.2
Visualizing the perspectives about genes
What has happened to the bacteria?

8. Visualizing the perspectives about genes
CB 16.2
Visualizing the perspectives about genes
Genes act as units of heredity
Genes are seen as a cause of disease
Genes code for proteins
Genes act as switches, controlling development
Genes are replicators (selfish gene)

9. Chains of DNA can store information:

10. The relationship between DNA and genes
a gene - DNA used to produce RNA or protein
promoter
coding region
terminator
non-gene
DNA

11. Genes are the parts of DNA that contain information.
CB 5.25
Genes are the parts of DNA that contain information.
Protein

12. In cells, DNA is a double-stranded helix
CB 16.7
In cells, DNA is a double-stranded helix

13. Five Definitions of Genes:
Genes act as units of heredity
Genes are seen as a cause of disease
Genes code for proteins
Genes act as switches, controlling development
Genes are replicators (selfish gene)

14. Proteins are the “doers” of the cell. They act as: Enzymes
Proteins are a string of amino acids
Proteins are the “doers” of the cell.
They act as:
Enzymes
Structural Support
Transporters
Signals
CB 5.20

15. 20 amino acids in proteins
CB 5.17
4 nucleotides in DNA ?
CB 16.5

16. How can 4 nucleotides code for 20 amino acids?IF
Ratio
(nucleotide:amino acid) Possible combinations 1:

17. How can 4 nucleotides code for 20 amino acids?IF
Ratio
(nucleotide:amino acid) Possible combinations 1: 2:

18. How can 4 nucleotides code for 20 amino acids?IF
Ratio
(nucleotide:amino acid) Possible combinations 1: 2: 3:

19. There are more possible combinations than amino acids.
How can 4 nucleotides code for 20 amino acids? IF
Ratio
(nucleotide:amino acid) Possible combinations 1: 2: 3:
There are more possible combinations than amino acids.

20. Combinations of 3 nucleotides code for each 1 amino acid in a protein.
CB 17.4
Combinations of 3 nucleotides code for each 1 amino acid in a protein.

21. CB 17.5
the Genetic Code

22. Changes in DNA can change the protein

23. Changes in DNA can change the protein

24. The fat cat ate the rat.
change one letter
The zat cat ate the rat.

25. The fat cat ate the rat. The zat cat ate the rat.
change one letter
The zat cat ate the rat.
delete one letter
The atc ata tet her at.

26. Combinations of 3 nucleotides code for each 1 amino acid in a protein.
CB 17.4
Combinations of 3 nucleotides code for each 1 amino acid in a protein.

27. How is DNA used to make proteins and RNA?
CB 5.25
How is DNA used to make proteins and RNA?
Both proteins and RNA are involved in the processes.
Protein

28. Differences between DNA and RNA

29. How is DNA used to make proteins and RNA?
CB 5.25
How is DNA used to make proteins and RNA?
Both proteins and RNA are involved in the processes.
Protein

30. The information in genes is what to make and when to make it.
CB 5.25
Genes act as switches.
The information in genes is what to make and when to make it.
Protein

31. Genes have three basic parts
a gene
promoter
coding region
terminator
non-gene
DNA

32. Genes contain the information to make RNA and/or proteins.
CB 5.25
Genes contain the information to make RNA and/or proteins.
Genes act as switches.
The information in genes is what to make and when to make it.
Protein

33. For life to exist, the information (genes) must be passed on.
CB 13.5
For life to exist, the information (genes) must be passed on.
1. Genes act as units of heredity
5. Genes are replicators (selfish gene)

34. Homework #1 due 2/7
Bonus #1 due 2/28