How many bonds are present between A & T or G & C? How many bonds are present between A & T or G & C? @Biology

Question

cathyangs · Answer

The different order of bonds and number of each make up your unique DNA code. there is no set number for each.

cathyangs · Answer

Also, you might want to know that this is only in DNA. And the A&T and G&C "rungs" can be switched, meaning that C (or any other nitrogenous base) could be connected to either side of the DNA strand. EX: (Imagine that this is twisted up) $$wtwisadf$$$$ould$$|dw:1320544826456:dw|

anonymous · Answer

a-t two hydrogen bonds
c-g 3hydrogen bonds.

agreene · Answer

ttom is correct for normal bonding base pairs. However, the entirely correct answer isn't so straightforward. dA-dT always binds with 2 hydrogen bonds dC-dG generally binds with 3, but has been seen binding with 2 hydrogen bonds Also, there are some 42 other combination of bases, most of which have been seen in x-ray crystallography... but, I suppose you didn't ask for that. The link below is to an article from the encycolpedia of life sciences, 2001 titled: "Base Pairing in DNA: Unusual Patterns" if you are interested in these other pairs, and/or seeing diagrams of the 'normal' ones (see figure 1) http://onlinelibrary.wiley.com/doi/10.1038/npg.els.0003127/full

anonymous · Answer

there are structures formed by DNA that look like a basket, where G binds to G via 2 hydrogen bonds