Also, guanine matches with cytosine meaning those two have the same percentage. a. adenine molecules in DNA is about equal to the percentage of guanine molecules. ... Based on Chargaff's rule, the percentages of guanine bases in chicken DNA should be around a. Biology. In a gene sequence, there is the same amount of guanine and cytosine. Adenine will link to a thymine on the opposite strand. The other numbers they give me are as follows: Adenine-31.3. Q. Because there is 17 percent cytosine then there has to be exactly the same amount of guanine because the are bonded in the DNA only to each other. thymine - 35% cytosine - 15% guanine - 15%. This adds up to 68% of the DNA. Cytosine-17.1 In molecular biology and genetics, GC-content (or guanine-cytosine content) is the percentage of nitrogenous bases in a DNA or RNA molecule that are either guanine (G) or cytosine (C). So 15% guanine and 15% cytosine= 30%. a. a purine always bonds with a purine b. purines include cytosine and guanine Cytosine pairs with guanine. This would leave 56% to adenine and thymine. Adenine is 34% of the DNA so Thymine is also 34%. So the amount of adenine is the same as the amount of thymine and the amount of cytosine is the same as the amount of guanine. It means that the number of adenine molecules is equal to thymine molecules and the number of guanine molecules is equal to cytosine molecules. Which statement below is true of nitrogen bases? yeast. Then there's 80% left for the other one-to-one couple: Thymine (T) and adenine (A). 2 Answers MeneerNask Jun 21, 2018 #40%# Explanation: Guanine (G) in DNA is one-to-one coupled to cytosine (C), so that also makes up for 10%. Based upon the data in the table provided complete letter D (32% Thymine), determine the percentage of Cytosine present in DNA of Yeast. A. % A = % T and % G = % C If dsDNA has 20% of cytosine, then according to the law, it would have 20% of guanine. Since guanine will always bind with cytosine and adenine with thymine, if guanine is 22% then cytosine will be 22% too. So you know that adenine matches with thymine, meaning they would have the same percentage. what did the fact that A and T, and G and C, occurred in equal amounts suggest about the relationship among these bases? Guanine-18.7. What is the percentage of Thymine in that sample? C+G = 44% A+T =56% (100–44) therefore, T= 56/2 = 23% ( amount of A is equal to amount of T in a normal DNA strand) Thus, percentage of G + C content = 40% So the remaining 32% of the DNA is cytosine and guanine. What percentage of thymine would you expect to find in yeast? So if you add 17 and 17 you get 34. The other two bases have to equal 70% because in total there will be 100%. 21.5% b. 19.9% c. 28.8% d. 13.4%. A sample of DNA has 10% Guanine. if a species has 35% adenine in its DNA what is the percentage of the other three bases? All of these percentages must add to 100%, so if cytosine is 22, guanine is also 22.