usmleasr Forum Guru
Topics: 105 Posts: 970
| | 04/06/04 - 09:15 AM  
 
   
 
|   #1 |
44. Double-stranded DNA can be denatured by heating and renatured by cooling. Renaturation under conditions of high stringency has which of the following effects? A) Considerable base mismatching is permitted B) GC base pairing is inhibited C) GT base pairing is promoted D) Mismatched DNA hybridization is prevented i couldn't understand q ..what is stringent condition? is it energy def ?please explain...
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| asmi Forum Hero
Topics: 1043 Posts: 4,609
| | 04/06/04 - 09:31 AM  
 
   
 
|   #2 |
yep got it its D see its telling under high stringent condition".--> prevents mismatching DNA hybridization :arrow: .renaturation of complementary DNA strand is an imp step for probing( southern blot /PCR) --->" hybridization process"
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| jalabert Forum Newbie
Topics: 0 Posts: 30
| | 04/06/04 - 04:22 PM  
 
   
 
|   #3 |
D- mismatch base pairing is inhibited. The GC pairing must occur for reannealing to result.
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| asmi Forum Hero
Topics: 1043 Posts: 4,609
| | 04/06/04 - 06:01 PM  
 
   
 
|   #4 |

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| krsma Forum Elite
Topics: 40 Posts: 227
| | 04/08/04 - 10:01 PM  
 
   
 
|   #5 |
what is "a high stringent condition" :?:
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| Idiopathic Forum Guru
Topics: 19 Posts: 641
| | 04/08/04 - 10:10 PM  
 
   
 
|   #6 |
No mismatches, I believe. Stringency equates with accuracy.
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