Docsity
Log inSign up
Docsity
Prepare for your exams
Prepare for your exams

Study with the several resources on Docsity

Earn points to download
Earn points to download

Earn points by helping other students or get them with a premium plan

Guidelines and tips
Guidelines and tips
Sell on Docsity
Sell on Docsity
Log inSign up

Prepare for your exams

Study with the several resources on Docsity

Find documents

Prepare for your exams with the study notes shared by other students like you on Docsity

Search Store documents

The best documents sold by students who completed their studies

Search through all study resources
Docsity AINEW

Summarize your documents, ask them questions, convert them into quizzes and concept maps

Explore questions

Clear up your doubts by reading the answers to questions asked by your fellow students

Earn points to download

Earn points by helping other students or get them with a premium plan

Share documents
download point icon20 Points

For each uploaded document

Answer questions
download point icon5 Points

For each given answer (max 1 per day)

All the ways to get free points
Get points immediately

Choose a premium plan with all the points you need

Study Opportunities

Choose your next study program

Get in touch with the best universities in the world. Search through thousands of universities and official partners

Community

Ask the community

Ask the community for help and clear up your study doubts

University Rankings

Discover the best universities in your country according to Docsity users

Free resources

Our save-the-student-ebooks!

Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors

From our blog

Exams and Study
Go to the blog

Exam 2 Questions for Molecular Genetics - Fall 2006 | BI 381, Exams of Molecular biology

Southeast Missouri State University (SEMO)Molecular biology
Prof. Allen C. Gathman

Material Type: Exam; Professor: Gathman; Class: Molecular Genetics; Subject: Biology; University: Southeast Missouri State University; Term: Spring 2006;

Typology: Exams

Pre 2010

Uploaded on 08/08/2009

koofers-user-z87
koofers-user-z87 🇺🇸

10 documents

1 / 6

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
BI 381 Exam 2 Spring 2006
Instructions: 1. Relax. 2. Genetic code and wobble tables at the end of the exam.
a. (20 points) In the table below, indicate whether each mutant organism will be able to
grow when placed on each medium by putting + for growth of the organism and - for no
growth of the organism. Please make them clear so I can read them.
Note: Compound B is hydrolyzed to yield D and E; compounds C and D are combined
by condensation to form F; compound G and some compound included in minimal
medium are combined by condensation to form H. The organism must either make or
receive compound J in order to grow. All mutants are auxotrophs, and each is mutant for
only one gene (coding for one enzyme).
Minimal Medium Supplemented with Compound
Mutant (none) A B C D E F G H I J
1
2
3
4
5
6
7
8
9
pf3
pf4
pf5

Partial preview of the text

Download Exam 2 Questions for Molecular Genetics - Fall 2006 | BI 381 and more Exams Molecular biology in PDF only on Docsity!

BI 381 Exam 2 Spring 2006 Instructions: 1. Relax. 2. Genetic code and wobble tables at the end of the exam. a. (20 points) In the table below, indicate whether each mutant organism will be able to grow when placed on each medium by putting + for growth of the organism and - for no growth of the organism. Please make them clear so I can read them. Note: Compound B is hydrolyzed to yield D and E; compounds C and D are combined by condensation to form F; compound G and some compound included in minimal medium are combined by condensation to form H. The organism must either make or receive compound J in order to grow. All mutants are auxotrophs, and each is mutant for only one gene (coding for one enzyme). Minimal Medium Supplemented with Compound Mutant (none) A B C D E F G H I J 1 2 3 4 5 6 7 8 9

  1. a. (10 points) Describe the process of intron removal and exon splicing in a eukaryotic RNA transcript. Be as specific as possible about the snurps involved and the sequence of events. b. (10 points) Describe the process of polyadenylation of a eukaryotic RNA transcript. Be as specific as possible about the enzymes involved and the sequence of events.
  1. (5 points each) For each of the following types of lesions in E. coli , tell whether it would be most likely to be repaired by direct reversal, base excision repair, mismatch repair, or nucleotide excision repair, and justify your answer. a. spontaneous deamination of cytosine results in a uracil in the DNA b. X-ray exposure causes breakage of bonds in a protein. This results in a tripeptide being added to a guanine in the DNA. c. UV-induced thymine dimer
  1. Mutations in the XPD gene in mice cause premature aging. The XPD protein is known to function in denaturing DNA in both transcription and NER, so XPD mutants have partial defects in both transcription and NER. XPA mutants show a complete loss of NER function. a. (5 points) deBoer et al. proposed two hypotheses to explain the premature aging in XPD mutant mice. What were those hypotheses? b. (10 points) What did each hypothesis predict would be observed in XPD/XPA double mutants, compared to XPD mutants? Explain why each hypothesis predicts what it does.