The original question was.... "the strands of DNA molecule are held together by hydrogen bonding between adenine with guanine molecules and cytosine with thymine molecules." But i know that isn't right. I know that the the strands of DNA molecule are held together by hydrogen bonding but i don't know between what tho. AN i have looked all over the web. help PLEASE..!!!
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The hydrogen bonds occur between adenine and thymine and between cytosine and guanine.
A-T
C-G
Andenine and guanine are both purines so they don't form H-bonds
Cytosine and thymine are both pyrimadines, so they dont form H-bonds
A-T
C-G
Andenine and guanine are both purines so they don't form H-bonds
Cytosine and thymine are both pyrimadines, so they dont form H-bonds
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"DNA nucleotides are joined together by hydrogen bonds at the bases. The two strands wind up to form the DNA double helix
3 hydrogen bonds between Guanine and Cytosine
2 hydrogen bonds between Adenine and Thymine
Adenine always pairs with Thymine while Guanine always pairs with Cytosine. This is called Chargaff's rules. There are 3 hydrogen bonds between C and G while there are only 2 hydrogen bonds between A and T. Therefore the bonds between the C ad G are stronger"
3 hydrogen bonds between Guanine and Cytosine
2 hydrogen bonds between Adenine and Thymine
Adenine always pairs with Thymine while Guanine always pairs with Cytosine. This is called Chargaff's rules. There are 3 hydrogen bonds between C and G while there are only 2 hydrogen bonds between A and T. Therefore the bonds between the C ad G are stronger"
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Of course that's not right, the strands of DNA molecule are held together by hydrogen bonding between Adenine with Thymine and Guanine with Cytosine. (A-T; G-C)
Adenine and guanine are purins
Cyosine and thymine (and uracil) are pyrimidins.
Adenine and guanine are purins
Cyosine and thymine (and uracil) are pyrimidins.