ACHIEVE:INTRO TO GENETIC ANALYSIS 1TERM
12th Edition
ISBN: 9781319401399
Author: Griffiths
Publisher: MAC HIGHER
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Chapter 1, Problem 5P
Summary Introduction
To determine: The number of hydrogen bonds between adenine and thymine and cytosine and guanine and the stability of DNA molecule.
Introduction. The process of
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In a segment of DNA consisting of 1000 nitrogen bases, 28% of which are thymine, how many bases are adenine, guanine, and cytosine?
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- Draw a structural formula for a nucleoside composed of the following. Q.) a-d-Ribose and adeninearrow_forwardWould the base pair Guanosine and Cytosine be more or less stable at pH 10 than at pH 7?arrow_forwardDraw a structural formula for a nucleoside composed of the following. Q.) b-2-Deoxy-d-ribose and cytosinearrow_forward
- An RNA molecule has the following percentages of bases: A = 27%, U = 38%, C=20%, G = 15%. (A) Is this RNA molecule single-stranded or double stranded? How can you tell? (B) What would be the percentage of each of the bases in the template strand of the DNA that contains the gene for this RNA?arrow_forwardWhat are the three components of a nucleotide?arrow_forwardCytosine makes up 42% of the nucleotides in a sample of DNA from an organism. Approximately what percentage of the nucleotides in this sample will be thymine?arrow_forward
- 5-Bromouridine is known to induce mutations in DNA. One of the characteristics of this compound is that the enol form is favored relative to the keto form. Draw the keto- and the eno- tautomers of the base. Determine (and draw) which base (A, T, G, or C) would most likely interact with each of the two forms by base-pair.arrow_forwardIf the GC content of a DNA molecule is 60%, what are the molar percentages of the four bases (G, C, T, A)?arrow_forwardThe base composition of one of the DNA chains of a DNA double helix contains 18 mol-%A, 35 mol-%T, 26 mol-%C, and 21 mol-%G (a) What is the base composition of the complementary DNA chain? (b) Is the total amount of purine bases equal to the total amount of pyrimidine bases for the DNA double helix?arrow_forward
- If a DNA double helix contains 28% T nucleotides, then what is the percentage of A nucleotides?arrow_forwardFor the trinucleotide 5’ G-C-A-3’ How many nucleotide subunits are present in its ‘backbone’? How many nucleotide ‘non-backbone’ subunits are present? How many phosphodiester linkages are present? What is the overall charge carried by the trinucleotide?arrow_forwardDNA molecules consist of chemically linked sequences of the bases adenine, guanine, cytosine, and thymine, denoted A, G, C, and T. A sequence of three basesiscalleda codon. A base may appear more than once in a codon. a) How many different codons are there? b) The bases A and G are purines, while C and T are pyrimidines. How many codons are there whose first and third bases are purines and whose second base is a pyrimidine? c) How many codons consist of three different bases?arrow_forward
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