1. For a restriction enzyme of sequence CAATTG, about how many cut sites would you expect in the entire genome?

2. Sequences to align, and sketch a likely divergence tree:

    Seq A   AGAUUCGUCUGUAGGUUUCCACCAA
    Seq B   ACAUUCGUGUAUAGGUUUCCACUAA
    Seq C   ACAUUCGUGUAGAGGUUUCCACUAA
    Seq D   AAGUUCGCUUGGAGGUUUCCACGAA
    Seq E   AUCGUGAGAUCCAGGUAUCCACAAU

3. Draw an evolutionary tree of these animals from planet Zlerin. Assume the species mutate and diverge at 1.5% / million years:

Table shows percent relatedness of each pair of species.

 

 

A

B

C

D

E

F

G

H

A

Carapler

100

86

73

55

55

97

73

41

B

Cheatler

86

100

73

55

55

86

73

41

C

Nyootler

73

73

100

55

55

73

82

41

D

Rumdler

55

55

55

100

92

55

55

41

E

Scampler

55

55

55

92

100

55

55

41

F

Sloogler

97

86

73

55

55

100

73

41

G

Sneakler

73

73

82

55

55

73

100

41

H

Tootler

41

41

41

41

41

41

41

100

4. Explain how the processes of gene cloning and PCR amplification are based on naturally occurring enzymatic processes in microbial genetics.

5. Explain the role of nucleic acid hybridization in identifying particular gene sequences within genomic DNA or cellular RNA. Compare and contrast the use of Northern blot, real-time PCR, and microarrays to measure gene expression.

6. Explain examples of regulating gene expression at the level of DNA sequence; RNA transcription; protein translation; and modification of RNA and of proteins.

7. Explain with a diagram the comprehensive model of eukaryotic transcription regulation. Explain which features are analogous to specific features of bacterial gene regulation.

8. Explain with examples the typical structure of eukaryotic transcription factors, including DNA binding and signal reception domains.

9. Explain the difference between operon and regulon. What kinds of molecular mechanism typically mediate the control of a regulon?

10. For each partial-diploid for the lac operon, explain whether B-galactosidase is expressed, and whether lactose is needed as inducer, and why:

A.
p+ oc lacZ-

p+ o+ lacZ+


lacI+

lacI-

B.
p+ o+ lacZ+

p- oc lacZ+


lacI-

lacI-