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

6 Questions on Molecular Genetics - Exam 2 - Fall 2007 | 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 2007;

Typology: Exams

Pre 2010

Uploaded on 08/08/2009

koofers-user-tzs
koofers-user-tzs 🇺🇸

10 documents

1 / 7

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
BI 381 Exam 2 Spring 2007
Instructions: 1. Relax. 2. Genetic code and wobble tables at the end of the exam. 3. Look
at all the questions and do the ones you know best first.
1. a. (10 points) Explain how intrinsic transcription termination occurs in a prokaryote.
b. (10 points) Explain how abortive initiation of transcription occurs in a prokaryote.
pf3
pf4
pf5

Partial preview of the text

Download 6 Questions on Molecular Genetics - Exam 2 - Fall 2007 | BI 381 and more Exams Molecular biology in PDF only on Docsity!

BI 381 Exam 2 Spring 2007 Instructions: 1. Relax. 2. Genetic code and wobble tables at the end of the exam. 3. Look at all the questions and do the ones you know best first.

  1. a. (10 points) Explain how intrinsic transcription termination occurs in a prokaryote. b. (10 points) Explain how abortive initiation of transcription occurs in a prokaryote.
  1. Figures 1c and 2b from Kozmin et al. are shown below. Stars mark groups of genotypes that were significantly different; fig. 1c shows three groups that are different from each other, and fig. 2b shows two groups that are different from each other. The functions of the wild type alleles of the genes referred to here are as follows: OGG codes for 8- oxoguanine N-glycosylase, RAD14 codes for lesion-binding protein required for yeast NER, and PHR1 codes for photolyase. ber- indicates a strain with mutant alleles of several genes encoding N-glycosylases, including ogg. Fig 1c. Fig. 2b. Questions on the next page refer to these graphs.

3.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. (5 points) Describe the process of forming the meG cap on a eukaryotic RNA transcript, being as specific as possible about the enzymes involved and the sequence of events.

4 a. (15 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. Notes: Compound B is hydrolyzed to yield E and F; compounds F and D are combined by condensation to form G; compounds G and H are combined by condensation to form I. The organism must either make or receive compound I in order to grow. Each mutant 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 1 2 3 4 5 6 7 8 b. (5 points) If a colony of mutant 4 cells is placed on minimal medium, what compound(s) will accumulate inside the mutant cells? Just answer, don't explain. c. (5 points) Suppose you had a double mutant strain of this organism, containing the mutant alleles from both mutants 2 and 7. Would it grow on any of the supplemented media listed above? If so, which one(s)? Just answer, don't explain.