are adenine and thymine equal?
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Chargaff's rules state that DNA from any cell of any organism should have a 1:1 stoichiometric ratio (base pair rule) of pyrimidine and purine bases and, more specifically, that the amount of guanine should be equal to cytosine and the amount of adenine should be equal to thymine.
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Answer and Explanation: If a piece of double stranded DNA has 32% thymine it has 18% cytosine. This is because of Chargaff's rule which states that the amount of thymine is...
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20% plus 20% is 40% of adennine and thymine. From 100% DNA bases subtract 40% and you will get 60%. Then divide this by 2 and you will get 30%. 30% of guanine and 30% of cytosine, because their amounts are equal in the DNA stand.
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Two purines will not fit between the strands while two pyrimidines will be too far to bond. Therefore a purine has to make a hydrogen bond with another pyrimidine. ... Hence adenine makes hydrogen bonds with thymine and guanine makes hydrogen bonds with cytosine.
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Cytosine and thymine are pyrimidines which are structures composed of a single six-sided ring. Adenine always binds to thymine, while cytosine and guanine always bind to one another. This relationship is called complementary base paring.
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['A with T: the purine adenine (A) always pairs with. the pyrimidine thymine (T)', 'C with G: the pyrimidine cytosine (C) always pairs with. the purine guanine (G)']
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Thymine /ˈθaɪmɪn/ (T, Thy) is one of the four nucleobases in the nucleic acid of DNA that are represented by the letters G–C–A–T. The others are adenine, guanine, and cytosine. Thymine is also known as 5-methyluracil, a pyrimidine nucleobase. In RNA, thymine is replaced by the nucleobase uracil.
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Its pentose sugar has 15 atoms also (the 5-carbon sugar used for ribonucleic acid (RNA) is very similar, but it has an extra oxygen atom). The phosphate group contains 4 atoms. Total for a thymine nucleotide: 34 atoms. Multiply that by 6 billion nucleotides and you get 204 billion atoms.
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as seen in the figure, two hydrogen bonds are formed between Adenine and Thymine , three hydrogen bonds are formed between cytosine and guanine. This is because the Adenine( purine base ) pairs only with the Thymine(pyrimidine base ) and not with Cytosine(purine base).
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The bases adenine, guanine, and cytosine are found in both DNA and RNA; thymine is found only in DNA, and uracil is found only in RNA.
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The guanine-cytosine pair is bound by three hydrogen bonds, while adenine-thymine pairs are bound by two hydrogen bonds. DNA with high GC content is more stable than DNA with low GC content. ... This takes into account that the G-C bond is stronger than the A-T bond.
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The structures of ATP and GTP are given below. The structure of ATP is similar to GTP. The linkage of the base to the sugar ribose and phosphates are exactly the same. The difference in the structure between ATP and GTP is that guanine replaces adenine.
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The term nucleic acid is the overall name for DNA and RNA. They are composed of nucleotides, which are the monomers made of three components: a 5-carbon sugar, a phosphate group and a nitrogenous base. ... Thymine occurs only in DNA and uracil only in RNA.
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Thus, in DNA, the purines adenine (A) and guanine (G) pair up with the pyrimidines thymine (T) and cytosine (C), respectively. In RNA, the complement of adenine (A) is uracil (U) instead of thymine (T), so the pairs that form are adenine:uracil and guanine:cytosine.
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Purines and Pyrimidines are nitrogenous bases that make up the two different kinds of nucleotide bases in DNA and RNA. The two-carbon nitrogen ring bases (adenine and guanine) are purines, while the one-carbon nitrogen ring bases (thymine and cytosine) are pyrimidines.
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Both deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) are composed of nucleotides. ... DNA contains the sugar deoxyribose, while RNA contains the sugar ribose. DNA contains the nitrogenous base thymine, while RNA contains the nitrogenous base uracil. The diagram below shows the structure of a DNA nucleotide.
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Chargaff's rule, also known as the complementary base pairing rule, states that DNA base pairs are always adenine with thymine (A-T) and cytosine with guanine (C-G). A purine always pairs with a pyrimidine and vice versa. However, A doesn't pair with C, despite that being a purine and a pyrimidine.