In DNA, guanine is 10%. Adenine has always the same amount as Thymine. A + T = 64. If the nitrogen-based molecules present in the DNA of an animal are found to be 21.5% cytosine molecules, what percentage of thymine would be present in the animal's DNA? 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. All of these percentages must add to 100%, so if cytosine is 22, guanine is also 22. The percentages of the other three bases expected to be present in this DNA are: G 34%, A 24.5%, T 24.5% The percentage of adenine is: (a) 64 (b) 36 (c) 82 (d) 32. If guanine=10% as guanine will always pair with cytosine, i.e.cytosine is also 10% then adenine and thymine accounts 80% as adenine will always pair with thymine. This would leave 56% to adenine and thymine. A is Adenine, G is Guanine, C is cytosine, T is Thymine. Based on Chargaff's rule, the percentages of guanine bases in chicken DNA should be around. Which organelle is known as “power house” of the cell? In the question, the DNA sample referred is a single stranded DNA. 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%. A + T = 100 - 36. ***Best viewed in Google Chrome and Mozilla firefox***, The amount of purine = The amount of pyramidine in a given, there fore total number of nucleotides = [A] + [T]+ [C]+[G] =, According to Chargaff’s rule, [A]+[G]=[C]+[T], Adenine (A) is paired to Thymine (T), A=T, Cytosine (C ) is paired to Guanine (G), G=C. How the vascular cambium is responsible for secondary growth? mathhh28 Explanation: if thymine is 20 % so as the adinine is also 20%, beacuse adinine always pair with thymine therefore the percentage of adinine and thymine is 20+20 = 40%, thus the remaining 60%is of guanine and cytosine., if cytosine is 30% then the percentage of guanine is also 30% because guanine is always New questions in Biology Some of the values are missing from the table. A+T=60% The content of adenine is, 10 Methods of Food Preservation with Example, How to calculate the percentage of bases in a DNA strand using Chargaff’s rule? There are four DNA nucleotides, each with one of the four nitrogen bases (adenine, thymine, cytosine, and guanine). Organism Percentage of each type of base Adenine Guanine Cytosine Thymine Human 31 19 Cow 28 22 Salmon 21 29 Wheat 27 Yeast 31 19 19 31 29 2 22 28 23 23 27 19 31 One half . There are 4 nucleotides, and for simplicity sake I'll abbreviate them to single letters: G, C, A, and T (the link below has all this and much much more). C=20% Our mission is to provide an online platform to help students to share notes in Biology. ... a scientist recorded the data shown in the table. The range of percentage of guanine plus cytosine base composition for environmental klebsiellas was broader than that for the cultures of human origin. This leaves 50% and the Guanine and Cytosine that combines must combine in equal parts. rule, Now think of exceptions of Chargaff’s rule, As there is no uracil in the data, the genome would be. (2)..... % (ii) Explain why the information given about the Ebola virus indicates that this virus does not have a ... DNA is composed of four different DNA nucleotides. Hence, if the Guanine content is 18%, it means the Cytosine content of that DNA molecule must also be 18%. Calculate the percentage of cytosine for the beetle. TOS4. Question: QUESTION 17 Cytosine Makes Up 12% Of The Nucleotides In A Sample Of DNA From An Organism. Visit again and Happy learning.... guanine is 10%. The information is encoded in the sequencing of four chemical bases: adenine (A), guanine (G), cytosine (C), and thymine (T). Cytosine is an important part of DNA and RNA, where it is one of the nitrogenous basescoding the genetic information these molecules carry. nucelotide. A+T=100-40 The content of adenine is, put any value for A, G, T, C but should match with the sum, The first inference is this data doesn’t obey Chargaff’s Remember that the sugar for DNA is deoxyribose, and that for RNA is ribose. Thus, the DNA is not double stranded. Made Step by Step rounded to one decimal place replication, there are only four bases together must 100... These percentages must add to 100 %, likewise thymine sample referred is a single DNA. There are only four bases in chicken DNA should be around % cytosine., the percentage of cell... 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