× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
a
5
k
5
c
5
B
5
l
5
C
4
s
4
a
4
t
4
i
4
r
4
r
4
Home Q & A Board Biology-Related Homework Help Cell Biology
New Topic  
firestorm5 firestorm5
wrote...
Posts: 36
Rep: 0 0
11 years ago
A.  The size of cytosine is different from the size of thymine, so the double helix would be kinked.  

B.  The partial charges are not opposites, so no hydrogen bonds can form.  

C.  Cytosine has the wrong sugar ring, so it cannot be linked to adenine.  

D.  Cytosine is facing the opposite direction from thymine, so adenine cannot bind it.  

E.  Cytosine cannot form hydrogen bonds, but thymine can.
Read 4722 times
2 Replies

Related Topics

Replies
wrote...
#1
11 years ago
B. The partial charges are not opposites, so no hydrogen bonds can form.
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/B/BasePairing.html
wrote...
#2
11 years ago
B is correct!
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1401 People Browsing
 103 Signed Up Today
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 57
  
 35589
  
 679
Your Opinion
What's your favorite coffee beverage?
Votes: 274
Previous poll results: Where do you get your textbooks?