However, guanine has amine or ketone groups attached to C-2 or C-6 positions in its six- membered ring. Adenine always pairs with thymine ,If an organisim DNA contains 30% adenine the thymine percentage will be 30%, so it has made to 60%. Guanine. A. If 24% of the DNA molecule is adenine, that means that there is 24% thymine. if adenine is 30 what is the percent of guanine. If only GUANINE IT IS 20% as Guanine always pairs with cytocine in DNA Therefore, A and T will both be 20%. So A+T = 46%. Guanine always bonds to cytosine. The remaining 40% must be adenine and thymine. If DNA has 22% thymine then it will have 22% adenine. It Guanine is 40%, then cytosine will also be 40%. In ATP, adenine is attached to a five carbon sugar. According to Chargaff’s rule, in all cellular DNAs, regardless of the species, number of adenosine residues is equal to the number of thymidine residues which means that A=T; and the number of guanosine residues is equal to the number of cytidine residues; G = C. So there must also be 30% cytosine. So 40% T and 40… Therefore the percentage of A and T must be approximately equal to the G and C. So in this we have 23% adenine then thymine also be equal to 23%. That is 48% of the DNA molecule. Like adenine, guanine is also composed of six-membered ring, attached to the five-membered ring. Since adenine and guanine are always present in equal numbers, the percentage of adenine molecule is 30%. They will be found in equal proportions because they bond to each other. and 60 : 60 = 40 : 40 = 1. Thus, A : T = G : C = 1 . If dsDNA has 20% of cytosine, then according to the law, it would have 20% of guanine. 10% B. This leaves 56% for guanine and cytosine. December 25, 2020, , Comments Off on if adenine is 30 what is the percent of guanine, , Comments Off on if adenine is 30 what is the percent of guanine So Thymine will also be 60%. To find the percentage of guanine, we need to minus 48% from the total 100%. the rest is 40 percent which must be guanine and cytocine both. Similarly, Adenine pairs with thymine, if guanine is 40%, the remaining 60% will be Adenine. Then there's 80% left for the other one-to-one couple: Thymine (T) and adenine (A). According to Chargaff's rule, adenine always pairs with thymine and cytosine always with guanine. Guanine is the purine which pairs with cytosine in DNA and RNA. Question: If A Sequence Of DNA Contains 40% Guanine (G) Then What Is The Percent Of Adenine (A) And Thymine (T), Together? So, the correct answer is '30%'. 100 … According to Chargaff’s rule: Guanine pairs with cytosine. Guanine pairs with cytosine. 40% Guanine (G) in DNA is one-to-one coupled to cytosine (C), so that also makes up for 10%. Thus, percentage of G + C content = 40% The remaining 60% represents both A + T molecule. Remaining is 54% must be between G and C. Divide 54 by 2 so we get 27 %. That leads to 28 % of guanine and 28% cytosine. Adenine pairs with thymine. The remaining 60 % represents both A + T molecule. 20% C. 40% D. 60% E. 80% This is because they pair together so they have to be equal. Since adenine and guanine are always present in equal numbers, the percentage of adenine molecule is 30 %.

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