WORLD OF CELL+MASTERING ACCESS >CUSTOM
9th Edition
ISBN: 9781323445044
Author: Hardin
Publisher: PEARSON C
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 16, Problem 16.2PS
DNA Base Composition. Based on your understanding of the rules of complementary base pairing, answer the following questions:
(a) You analyze a DNA sample and find that its base composition is 30% A, 20% T, 30% G, and 20% C. What can you conclude about the structure of this DNA?
(b) For a double-stranded DNA molecule in which 40% of the bases are either G or C, what can you conclude about its content of the base A?
(c) For a double-stranded DNA molecule in which 40% of the bases are either G or T, what can you conclude about its content of the base A?
(d) For a double-stranded DNA molecule in which 15% of the bases are A, what can you conclude about its content of the base C? Would you expect the Tm of this DNA to be above or below 90°C? (Hint: Refer to Figure 16-12.)
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Biochemist Erwin Chargaff was the first to note that, in DNA, [A] = [T] and [G]= [C], equalities now called Chargaff’s rule. Using this rule, determine the percentages of all the bases in DNA that is 20% thymine.
DNA
True or false
A long chain polymer in which the internucleotide linkages are of the diester type between C-3’ and C-5’
Hydrolyzed by weak alkali (pH 9 to 100°C)
Different from RNA since in the latter the internucleotide linkages are between C-2’ and C-5
Usually present in tissues as a nucleoprotein and cannot be separated from its protein component
Calculating human genome
If 1.5 percent of the human genome consists of protein-coding sequences, and the entire genome has 3.2x10^9, how many codons are there in the human genome? Remember that a codon is three nucleotides in length.
Chapter 16 Solutions
WORLD OF CELL+MASTERING ACCESS >CUSTOM
Ch. 16 - Based on what you know about protein and DNA, why...Ch. 16 - The GC content of the DNA from a newly discovered...Ch. 16 - Prob. 1QCh. 16 - Changes in chromatin packing correlate with...Ch. 16 - You are studying a cytosolic protein, and your...Ch. 16 - Prior Knowledge. Virtually every experiment...Ch. 16 - DNA Base Composition. Based on your understanding...Ch. 16 - DNA Structure. Carefully inspect the...Ch. 16 - QUANTITATIVE DNA Melting. Figure 16-36 shows the...Ch. 16 - DNA Renaturation. You are given two samples of...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Number of Okazaki Fragments in E. coli and Human DNA Replication Approximately how many Okazaki fragments are synthesized in the course of replicating an E. coli chromosome? How many in replicating an “average� human chromosome?arrow_forwardReplication:- what other enzymes are involved in the initiation phase?- explain the role of primers in this phase- how is the building of the leading strand different from that of the lagging strand?arrow_forwardComposition as a mole fraction of one of a double-stranded DNA strand T = 0.22 and C = 0.30. In the light of this information, the following values are Calculate as a fraction. If the given information is used to calculate the desired value, If it is not sufficient, indicate the result as X.arrow_forward
- DNA What do A and G have in common that is notably different from T and C?arrow_forwardNot just generic "degradation" or even shorter DNA fragments, what specific structure change in double-stranded DNA does the hyperchromicity effect show?arrow_forwardThinking about the complexity of biochemical systems as they relate to the human body and the specificity of DNA, why can we not describe the “average” behavior of a DNA molecule?arrow_forward
- recall that DNA has bases A, C, G, and T. Suppose we invented a DNA2 genetic material that has bases A, A1, C, C1, G, G1, T and T1. then how many symbols can be represented by two characters from DNA2?arrow_forwardVertebrate proteins? What is meant by the term polypeptide backbone?arrow_forwardCompare and contrast the structure of DNA and RNA. Be sure to describe each of the three components of a nucleotide for both DNA and RNA along with the types of bonds formed between the components. In addition, explain: how the nucleotides link together to form each molecule, why the prime ends are labeled 5’ and 3’, what antiparallel is, what phospodiester linkages are and what complementary base pairing is.arrow_forward
- Question- Determine the exact molecular weight of the following oligonucleotide and calculate the average molecular weight of an equivalently long oligonucleotide. What is the percent error between the two? Sequence (5’-3’) : GCT TTA GCG GTC AAG TGC TGT GCC ATT T M.W. of a nucleotide in ssDNA = 303.7 + 79.0 M.W. of base pair in dsDNA = 607.4 + 158arrow_forwardTick the correct statements: Remember: Tautomers are structural isomers that differ from each other based on the position of the proton(s) and their double bonds. ( ) The nitrogenous bases of nucleic acids, which contain heterocyclic and analogous nuclei, can adopt different tautomeric forms involving multiple H+ that are exchangeable depending on the medium. In DNA, spontaneous formation of smaller tautomers appears to contribute to mutagenic errors during DNA replication, while in RNA, they seem to be related to increased structural and functional diversity of enzymes and RNA aptamers (research this and confirm if it is false or real) ( ) in relation to the figure, anomer 1 has beta stereochemistry with respect to the C anomeric of the pentose, and is making an N-glycosidic bond ( ) in relation to the figure, anomer 1 has alpha stereochemistry with respect to the C anomeric of the pentose, and is making an N-glycosidic bond ( ) In general, in naturally occurring nucleosides,…arrow_forwardDNA What do thymine (T) and cytosine (C) have in common, that makes them different from Adenine (A), and Guanine (G)?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
BiochemistryBiochemistryISBN:9781305577206Author:Reginald H. Garrett, Charles M. GrishamPublisher:Cengage Learning
BiochemistryBiochemistryISBN:9781305961135Author:Mary K. Campbell, Shawn O. Farrell, Owen M. McDougalPublisher:Cengage Learning
Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
Biochemistry
Biochemistry
ISBN:9781305577206
Author:Reginald H. Garrett, Charles M. Grisham
Publisher:Cengage Learning
Biochemistry
Biochemistry
ISBN:9781305961135
Author:Mary K. Campbell, Shawn O. Farrell, Owen M. McDougal
Publisher:Cengage Learning
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
DNA vs RNA (Updated); Author: Amoeba Sisters;https://www.youtube.com/watch?v=JQByjprj_mA;License: Standard youtube license