There are four bases in the DNA double helix: adenine, guanine, cytosine and thymine. An adenine in one strand always pairs with a thymine in the other strand. Similarly, a cytosine always pairs with a guanine. So the number of adenines always equals the number of thymines, and the number of cytosines always equals the number of thymines. The total number of bases must equal 100%. So if 30% of the bases are adenine, another 30% must be thymine because they always pair with each other. Thymine and adenine added together therefore make 60% of the bases. The remaining 40% must be cytosine plus guanine. If the number of cytosines must equal the number of guanines, the percentage of cytosines must be ....... well, you can work it out for yourself!
To answer this question, remember this: in DNA, adenine always pairs with thymine, and cytosine always pairs with guanine. Also, in a normal DNA molecule, all of the bases are paired.
If 20% of the bases in DNA are adenine, then it follows that another 20% must be thymine, because adenine always pairs with thymine. Adding both percentages up, we get 40% of the DNA bases being adenine and thymine. That means the remaining 60% of the bases in the DNA molecule are cytosine and guanine. Using the same reasoning above, the proportions of cytosine and guanine must be equal because cytosine always pairs with guanine. Therefore, cytosine and guanine each compose 30% of the DNA molecule.
30 %.
Adenine pairs with thymine - therefore if 20% is A, another 20% percent will be T. Only two other bases are left, which form pairs: guanine and cytosine, in equal quantities. Therefore half of the remaining 60 percent will be guanine.
In a DNA molecule there are 4 type of nucleotide bases : adenine, guanine, cytosine and thymine
According to the Watson-Crick rule: Adenine (A) always bonds with thymine (T), and guanine (G) with cytosine (C).
In the given DNA molecule we have 20% G, thus we also have 20% of C. The remaining 60% must contain A+T in equal amount. So according to this we have 60/2=30% of Adenine.
cytosine pairs with only guanine.....therefore
% adenine=%thymine=30% which totally makes 60% of the bases......% of cytosine=%of guanine=(40/2)%=20%
[Guanine] = [Cytosine]
[Adenine] = [Thiamine]
Therefore
100% - 15% Guanine - 15% Cytosine = 70% (Adenine + Thiamine)
Adenine = 35%
20 % guanine
30%
Thymine binds to adenine, so we know that for every thymine, there will be one adenine. That's 15% thymine and 15% adenine. We are left with 70% other nitrogen bases. There are two bases left (guanine and cytosine), both of which bond together in equal numbers. So 70 divided by 2 is 35 -- 35% guanine and 35% cytosine.
There are only 4 nitrogenous bases in DNA. These are adenine, thymine, guanine, and cytosine. Adenine will only pair with thymine, and guanine will only pair with cytosine.
Both DNA and RNA have nitrogenous bases. The nitrogenous bases in DNA are adenine (A), thymine (T), cytosine (C), and guanine (G). The nitrogenous bases in RNA are adenine (A), uracil (U), cytosine (C), and guanine (G). In DNA, A and T pair together, as does C and G. In RNA, C and G also pair together, but A pairs with U because U replaces T in RNA.
Pyrimidines, which include cytosine, thymine and uracil.andPurines, which include adenine and guanine
THEY ARE ALL NITROGENOUS BASES IN THE DNA adenine and guanine are purines thymine and cytosine are pyrimidines
simple adenine pairs with thymine and guanine pair with cystosine.
Yeast with adenine-31.3% has the percentage of adenine.
29.7 percent of its dna is adenine, get mad?
Adenine and guanine are the two purines bases present in DNA.Two purines in DNA are adenine and guanine.
A DNA nucleotide includes a phosphate, a deoxyribose sugar and a nitrogenous base. Only the nitrogenous base changes in the four different nucleotides. The four different bases are adenine (A), thymine (T), cytosine (C) and guanine (G).
adenine, and guanine are purines Cytosine and thymine are pyrimidines. by:mj
as adenine is complementary to thymine,the percentage of thymine is 20% out of 100% 40%is adenine and thymine(20%A +20%T)the rest is 60% cytosine is complementary to guanine so the percentage of cytosine and guanine is 30%and 30%
DNA has four different bases. The bases of DNA are adenine, guanine, cytosine, and thymine. Thymine is the smaller pyrimidines and Guanine are the larger purines.
Adenine and guanine.
A-Adenine C-Cytosine T-thymine G-guanine
Adenine, Thymine, Guanine, and Cytosine
Nitrogen bases of RNA are adenine, guanine, cytosine and uracil.