Top Posters
Since Sunday
g
3
3
2
J
2
p
2
m
2
h
2
s
2
r
2
d
2
l
2
a
2
This topic contains 2 attachments.
Home Q & A Board Biology-Related Homework Help Genetics and Developmental Biology
New Topic  
bns781 bns781
wrote...
Go to Answer
Posts: 1
Rep: 0 0
9 years ago
You decide to use cotransduction to determine the order of the leuB and leuD loci. You use bacteriophage to transduce DNA from an ala3 + leuB + leuD + donor strain into an ala3 – leuB – leuD – recipient strain and select for 10,000 ala3 + transductants. You determine the genotypes of these transductants at the leuB and leuD loci and count the number with each genotype. The following table shows your results:
(See attachment 1 for the table of results.)

Using these data, determine the order of leuA, leuB, and leuD. Place the three loci on the map by dragging the correct label to the appropriate location. (Note: The map is not drawn to scale.)
(See attachment 2 for the map/figure.)

I know that the answer is not leuA, leuB, leuD (in left to right order on the map). In this case, I know that 2 of the 3 targets are incorrect. I'm sure it's important to consider why the ala3 + leuB + leuD – genotype is so uncommon in the table of results, but I am having some trouble figuring things out beyond this point. Any help or hints would be greatly appreciated.
 Attached file(s) 
Thumbnail(s):
You must login or register to gain access to these attachments.
Read 4504 times
4 Replies
Replies
Answer verified by a subject expert
bio_manbio_man
wrote...
#1
Educator
Top Poster
Posts: 33233
Rep: 3442 15
9 years ago Edited: 3 years ago, bio_man
Sign in or Sign up in seconds to unlock everything for free
1

Related Topics

wrote...
#2
3 years ago
thank you
wrote...
#3
3 years ago
Thank you
wrote...
#4
Educator
3 years ago
Answer has been updated...
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1071 People Browsing
 114 Signed Up Today
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Related Images
  
 887
  
 203
  
 346
Your Opinion
Who will win the 2024 president election?
Votes: 3
Closes: November 4
Previous poll results: Which of the following is the best resource to supplement your studies: