We Can Figure This Out.org
Virtual Lab: DNA (close-up & do-it-yourself)
 University of Virginia
               
 
© 2003-Present, John C. Bean
 
Here, finally, are two base pairs properly inserted between their surrounding deoxyribose-methyl-phosphate spirals.

For each base position you can cycle through Adenine (A), Cytosine (C), Guanine (G), Thymine (T) or no base by clicking the appropriate button:

Top Left:
Top Right:
Bottom Left:
Bottom Right:

To turn the labels or hydrogen bonds on/off click:

Base Labels:
Hydrogen Bonds:
(Rotate & zoom the model using mouse or trackpad)
 
Last Scene
 
Next Scene