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Adenine does form a base pair with thymine (linked with two hydrogen bonds).
Cytosine does form a base pair with guanine (linked with three hydrogen bonds).
Both the number of the bounds and the spatial location of these bonds ensure that the correct bases pair in the double string DNA.
Nitpicking: Note that adenine can of course bind with all the bases (A,T,C,G) otherwise a DNA sequence like CAG would be impossible.
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoFirst of all, thymine is a pyrimidine (contains only 1 cycle) and Adenine is a purine (contains 2 cycles), and in the DNA structure we always find a specific purine associated to a specific pyrimidine (T-A and G-C) because of 2 reasons:
1/ steric constraint
two purine associated together (= 4 cycles in total) will take much space
two pyrimidine associated together (= 2 cycles in total) will be far from each other to make stable bonds.
2/ chimical constraint
every base is related to its twin by a hydrogen bond.
facing a NH2 groupe of a purine we should find a C=O of a pyrimidine, and vice versa facing a NH2 of a pyrimidine we should find a C=O of a purine. Thus, Adenine will be coupled with Thymine and Guanine with Cytosine.
Wiki User
∙ 13y agoThis is due to the chemical structure of adenine and thymine - each has only two dipoles exposed to the other so only two bonds can be made.
Wiki User
∙ 11y agoThymine and Uracil bond only with Adenine
Wiki User
∙ 12y agocuz it does
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What nitrogenous base sequence bonded to T C G A A T?
C pairs with G and A pairs with T. So, G G T C A T C A A. If that's not what you want, I'm sorry.
Water dissolves ionic compounds because water molecules?
So basically an atom of water or (H2O) is made up of two hydrogen atoms and one oxygen atom that are covalently bonded together to make a compound. A covalent bond is when two nonmetal elements, most commonly, two gases come together to make a compound. So water is a covalent bond because it is hydrogen bonded with oxygen which are both nonmetal elements being bonded together to form a covalent bond. There is a difference between ionic bonds and covalent bonds. The difference between an ionic bond and a covalent bond is that in a covalent bond the two or more elements that are being bonded together share electrons rather than take them like in an ionic compound. So with the fact that covalently bonded compounds share electrons in mind, electrons are not evenly distributed or shared throughout a water molecule because oxygen atoms strongly attract electrons. Because the oxygen atoms do this they pull electrons away from the hydrogen atoms giving them a partial positive charge. Now that the oxygen atom has the electrons closer to it than the other two hydrogen atoms it gives the oxygen atom a partially negative charge. This act of atoms not evenly sharing electrons is called a polar compound. What is special about compounds that are polar is that is attracts both positive and negative ions of an ionic commpund. Thats why water can dissolve ionic compounds because its polar structure.
Which cat forms strong family bonds?
lions
Who ran the bases the slowest?
Barry Bonds or Frank Thoamos
What two elements are always involved in forming ionic bonds?
There are no two chemical elements that are alwaysinvolved in forming ionic bonds. If the questioner meant something else, a rephrasing of the question is needed.
What does Adenine A bond with?
Adenine bonds with thymine in DNA and uracil in RNA.
What are the rungs steps of a DNA molecule made of?
The 'steps' or 'rungs' of the DNA 'ladder' are complimentary pairs of bases bonded by hydrogen bonds. The bases are Adenine, Thymine, Cytosine and Guanine. Adenine always bonds to Thymine and Cytosine always bonds to Guanine.
What are the rungs of the steps DNA ladder made of?
The 'steps' or 'rungs' of the DNA 'ladder' are complimentary pairs of bases bonded by hydrogen bonds. The bases are Adenine, Thymine, Cytosine and Guanine. Adenine always bonds to Thymine and Cytosine always bonds to Guanine.
What are the ''rungs'' (steps) of the DNA ladder made of?
The 'steps' or 'rungs' of the DNA 'ladder' are complimentary pairs of bases bonded by hydrogen bonds. The bases are Adenine, Thymine, Cytosine and Guanine. Adenine always bonds to Thymine and Cytosine always bonds to Guanine.
How is the hydrogen bond formed between purine and pyrimidine?
In the case of adenine bonding to thymine, the NH group of the thymine bonds with the N of the adenine, and the double-bonded oxygen on the thymine bonds with the NH2 group on the adenine. (thymine)N - H - N(adenine) and (thymine)=O - H - NH(adenine) In the case of guanine bonding to cytosine, the double-bonded O group of the cytosine bonds with the NH2 of the guanine, the N on the cytosine bonds with the NH group on the guanine, finally, the NH2 on the cytosine bonds with the double-bonded O on the guanine. (cytosine)=O - H - NH(guanine) and (cytosine)N - H - N(guanine) finally (cytosine)NH - H - O=(guanine) In summary, there are two H bonds between an adenine and a thymine. There are three H bonds between a cytosine and guanine.
What type of bonding exists between particular purines and pyrimidines in DNA?
adenine and thymine are bonded by 2 hydrogen bonds and cytosine and guanine are bonded by 3 hydrogen bonds
What are the nitrogenous base pairing rule?
adenine bonds to thymine cytosine bonds to guanine. (In RNA adenine bonds to uracil)
Which nitrogen base bonds with adenine?
Thymine will always bond with adenine, and guanine will always bind with cytosine.
What are the complementary base-pairing rules for biology?
In DNA, Adenine bonds with Thymine, Cytosine bonds with Guanine. In RNA, Thymine is replaced with Uracil (bases capitalized for easy emphasis/reference, not grammar.) Purines and Pyrimidines are two families of Nitrogenous bases. In DNA: Adenine and Guanine : Purines Cytosine and Thymine: Pyrimidines Adenine bonds with Thymine and Guanine bonds with Cytosine. A&T have 2 hydrogen bonds and G&C have 3 hydrogen bonds.
Is thymine found in Dna?
Yes it is, along with the other nucleotide bases adenine, cytosine and guanine. Thymine bonds with Adenine in Dna. Adenine bonds with Uracil in Rna.
A bonds with what?
Adenine bonds with thymine in a DNA strand, however, in an RNA strand, Adenine bonds with uracil.
What nitrogen base bonds with thymine?
Adenine
