× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
w
3
w
3
e
3
3
r
3
g
2
2
b
2
M
2
V
2
f
2
c
2
This topic contains 1 attachment.
Home Q & A Board Biology-Related Homework Help Genetics and Developmental Biology
New Topic  
asjd11 asjd11
wrote...
Posts: 7
Rep: 0 0
11 years ago
DNAs were allowed to hybridize to each other.  The resulting double helix structures were isolated and visualized via electron microscopy:

 SHAPE  \* MERGEFORMAT A. (5pnts) What is a revertant mutation (in general)?

B. (5pnts) What was the genetic event that caused the original lac- mutation (ie did not allow for the expression of lacZ, lacY, or lacA)?

C. (5pnts) Why did this event result in failure to produce permease and transacetylase?

D. (5pnts) What is the nature of the Type I Reverting mutations?


E. (5pnts) What is the nature of the Type II Reverting mutations?


F. (5pnts) What is the nature of the Type III Reverting mutations?
 Attached file 
(97 KB)
You must login or register to gain access to this attachment.
Read 395 times
1 Reply

Related Topics

Replies
wrote...
#1
11 years ago
A revertant is a mutant that has reverted to its former genotype or to the original phenotype by means of a suppressor mutation, or else by compensatory mutation somewhere in the gene (second site reversion).

I have no clue for the rest, hope someone else can chime in Undecided
Biology - The only science where multiplication and division mean the same thing.
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  365 People Browsing
 117 Signed Up Today
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 933
  
 1299
  
 316
Your Opinion
Which country would you like to visit for its food?
Votes: 264
Previous poll results: Which of the following is the best resource to supplement your studies: