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Chapter 17 – From Gene to Protein 1909 – Garrod : First to suggest that genes dictate phenotypes through enzymes that catalyze specific chemical processes.

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Presentation on theme: "Chapter 17 – From Gene to Protein 1909 – Garrod : First to suggest that genes dictate phenotypes through enzymes that catalyze specific chemical processes."— Presentation transcript:

1 Chapter 17 – From Gene to Protein 1909 – Garrod : First to suggest that genes dictate phenotypes through enzymes that catalyze specific chemical processes in the cell.

2 Figure 17.1 Beadle and Tatum’s evidence for the one gene-one enzyme hypothesis

3 ONE GENE-ONE POLYPEPTIDE HYPOTHESIS WHY POLYPEPTIDE INSTEAD OF PROTEIN?

4 Figure 17.2 Overview: the roles of transcription and translation in the flow of genetic information (Layer 1)

5 Figure 17.2 Overview: the roles of transcription and translation in the flow of genetic information (Layer 2)

6 Figure 17.2 Overview: the roles of transcription and translation in the flow of genetic information (Layer 3)

7 Figure 17.2 Overview: the roles of transcription and translation in the flow of genetic information (Layer 4)

8 Figure 17.2 Overview: the roles of transcription and translation in the flow of genetic information (Layer 5)

9 RNA

10 Figure 17.3 The triplet code

11 Figure 17.4 The dictionary of the genetic code

12 TRANSCRIPTION http://www.ncc.gmu.edu/dna/transcri.htm

13 Figure 17.6 The stages of transcription: initiation, elongation, and termination (Layer 1)

14 Figure 17.6 The stages of transcription: initiation, elongation, and termination (Layer 2)

15 Figure 17.6 The stages of transcription: initiation, elongation, and termination (Layer 3)

16 Figure 17.6 The stages of transcription: initiation, elongation, and termination (Layer 4)

17 Figure 17.6 The stages of transcription: elongation

18 Figure 17.7 The initiation of transcription at a eukaryotic promoter

19 Figure 17.8 RNA processing; addition of the 5 cap and poly(A) tail

20 Figure 17.9 RNA processing: RNA splicing

21 Figure 17.10 The roles of snRNPs and spliceosomes in mRNA splicing

22 Figure 17.11 Correspondence between exons and protein domains

23 TRANSLATION http://www.ncc.gmu.edu/dna/initiati.htm Go through all the steps of translation at site

24 Figure 17.12 Translation: the basic concept

25 Figure 17.13a The structure of transfer RNA (tRNA)

26 Figure 17.13b The structure of transfer RNA (tRNA)

27 Figure 17.14 An aminoacyl-tRNA synthetase joins a specific amino acid to a tRNA

28 Figure 17.15 The anatomy of a functioning ribosome

29 Figure 17.16 Structure of the large ribosomal subunit at the atomic level

30 Figure 17.17 The initiation of translation

31 Figure 17.18 The elongation cycle of translation

32 Figure 17.19 The termination of translation

33 Figure 17.20 Polyribosomes

34 Figure 17.21 The signal mechanism for targeting proteins to the ER

35 Table 17.1 Types of RNA in a Eukaryotic Cell

36 Figure 17.22 Coupled transcription and translation in bacteria

37 Figure 17.23 The molecular basis of sickle-cell disease: a point mutation

38 Figure 17.24 Categories and consequences of point mutations: Base-pair insertion or deletion

39 Figure 17.24 Categories and consequences of point mutations: Base-pair substitution

40 Figure 17.25 A summary of transcription and translation in a eukaryotic cell


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