× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
4
n
3
j
3
o
2
x
2
c
2
2
p
2
n
2
3
2
C
2
z
2
Home Q & A Board Biology-Related Homework Help Cell Biology
New Topic  
smaapatel smaapatel
wrote...
Posts: 7
Rep: 0 0
11 years ago
Why is it that when a bacterial gene involved in virulence is knocked out, and then restored via a plasmid, virulence is not completely restored?
Read 563 times
1 Reply

Related Topics

Replies
wrote...
#1
11 years ago
This will definitely depend on the species in question.  (Bacillus anthracis' main virulence factors are encoded on plasmids, not the chromosomes.)

The most logical explanation for this phenomena is that the original virulence gene was regulated in a way that maximized the virulence.  There may have been a promoter region near the original site of the gene.  The plasmid may not have this region and therefore may not be expressed as often.
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  956 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 1082
  
 882
  
 278
Your Opinion
What percentage of nature vs. nurture dictates human intelligence?
Votes: 431
Previous poll results: Who will win the 2024 president election?