Human Heredity: Principles and Issues (MindTap Course List)
11th Edition
ISBN: 9781305251052
Author: Michael Cummings
Publisher: Cengage Learning
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Chapter 8, Problem 14QP
State the properties of the Watson–Crick model of DNA in the following categories:
- a. number of polynucleotide chains
- b. polarity (running in same direction or opposite directions)
- c. bases on interior or exterior of molecule
- d. sugar/phosphate on interior or exterior of molecule
- e. which bases pair with which
- f. right- or left-handed helix
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Students have asked these similar questions
In the Watson-Crick model for the DNA double helix (B form) the A-T and G-C base pairs share all
but one of the following properties. Which is the exception?
None of the proton-binding groups in the purine and pyrimidine bases is in its charged or ionized form.
The plane of the base pair is roughly perpendicular to the axis of the helix in each case.
The number of hydrogen bonds formed between the two bases of the base pair is the same.
O The distance between the two glycosidic (base-sugar) bonds is the same in both base pairs, within a few
tenths of an angstrom.
State the properties of the Watson-Crick model of DNA in the following categories:
a) number of polynucleotide chains
b) polarity (strand direction running same or opposite
c) bases on interior or exterior of molecule
d) sugar/phosphate on interior or exterior of molecule
e) which bases pair with which
f) right- or left-handed helix
In the Watson-Crick structure of DNA, the:
a. adenine content of one strand must equal the thymine content of the same strand.
b. nucleotides are arranged in the A-form.
c. purine content (fraction of bases that are purines) must be the same in both strands.
d. two strands are parallel.
e. the strands are complementary to each other.
Chapter 8 Solutions
Human Heredity: Principles and Issues (MindTap Course List)
Ch. 8.4 - Two genes associated with breast cancer, BRCA1 and...Ch. 8.4 - Prob. 2GRCh. 8 - What are Bruces options at this point? Bruce and...Ch. 8 - Should he reconsider and try chemotherapy instead?...Ch. 8 - Should he go ahead and enroll on the chance that...Ch. 8 - Until 1944, which cellular component was thought...Ch. 8 - Why do you think nucleic acids were originally not...Ch. 8 - Prob. 3QPCh. 8 - In the experiments of Aery, MacLeod, and McCarty,...Ch. 8 - Read the following experiment and interpret the...
Ch. 8 - Recently, scientists discovered that a rare...Ch. 8 - List the pyrimidine bases, the purine bases, and...Ch. 8 - In analyzing the base composition of a DNA sample,...Ch. 8 - The basic building blocks of nucleic acids are: a....Ch. 8 - Adenine is a: a. nucleoside b. purine c....Ch. 8 - Polynucleotide chains have a 5 and a 3 end. Which...Ch. 8 - DNA contains many hydrogen bonds. Are hydrogen...Ch. 8 - Prob. 13QPCh. 8 - State the properties of the WatsonCrick model of...Ch. 8 - Using Figures 8.7 and 8.9 as a guide, draw a...Ch. 8 - A beginning genetics student is attempting to...Ch. 8 - Chemical analysis shows that a nucleic acid sample...Ch. 8 - Prob. 18QPCh. 8 - RNA is ribonucleic acid, and DNA is...Ch. 8 - What is the function of DNA polymerase? a. It...Ch. 8 - Which of the following statements is not true...Ch. 8 - Make the complementary strand for the following...Ch. 8 - How does DNA replication occur in a precise manner...Ch. 8 - Nucleosomes are complexes of: a. RNA and DNA b....Ch. 8 - Discuss the levels of chromosomal organization...
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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
- Which of the following statements DOES NOT apply to the Watson and Crick model of DNA? a. The two strands of the DNA helix are anti-parallel. b. The distance between the strands of the helix is 20 angstroms (A). c. The framework of the helix consists of sugar-phosphate units of the nucleotides. d. The two strands of the helix are held together by covalent bonds. e. The purines are attracted to the pyrimidines. ...Explain your answer.arrow_forwardAccording to the Watson- Crick model how many polynucleotide chains does a DNA molecule have?arrow_forwardBased on Chargaff’s rules, if a segment of DNA is composed of 20% adenine (A) bases, what is the percentage of guanine (G)?arrow_forward
- if this DNA has a molecular weight of 1.20 ×108 Dalton which contains a head in a about 200 nm long. Calculate the length of the DNA assuming the molecular weight of a nucleotide pair is 600 Dalton and assume that the DNA is a B-form and that there are 10 base pair per turn which makes is 34 Å per turn. ( 1nm = 10Å)arrow_forwardGiven the following eukaryotic DNA strand, transcribe and translate the DNA into a polypeptide using the 3’ – 5’ strand as the template. You may use drawings, diagrams, colours and annotations to describe how the DNA strand will be synthesized into a functional protein. (KEY: The letters SBMD are “made up” nucleic acids that depict non-coding regions in the DNA, hypothetically S pairs with B and M pairs with D).2.2. Describe what are missense mutations and its effects on structure and function using haemoglobin as an examplearrow_forwardThe proposed model of the DNA double helix by Watson and Crick was based on earlier findings the DNA structure is a helix and that the number of bases or nucleotide C+A is always equal to G + T. With this in mind, what is the number of hydrogen bonds that hold this DNA helix with the following sequence: AGGTCTTCGTGGCCTA TCCAGAAGCACCGGAT 28 58 41 38arrow_forward
- Write DETAILED notes on the following features Watson-Crick model of DNA structure. DO NOT describe the structure of monomers. DO describe all the characteristic biochemical features of (a) the helix backbone; (b) the helix interior; (c) three different types of chemical bonds or interactions found in the helix, and exactly where you come across these in the structure of DNA. Write your answer in a dot-point form, your own words, in 5-6 lines, asap pleasearrow_forwardChoose all of the statements that correctly describe the base pairs drawn below. A C H H-N -H-N N-H- -N B H D موعة Rita N -H---- 2 NHN O- -H-N H -H- N- -H-N The non-Watson-Crick base pair shown in A is much less stable than the base pairs shown in B and C, because the smaller size of the two pyrimidine bases induces a distortion in the structure of the double helix that decreases the stability of the helix when compared to helices with the normal Watson-Crick base pairs. The base pair shown in B is found in BOTH DNA and RNA The base pair shown in C is found ONLY in RNA and NOT DNA The base pair seen in B is more stable than the Watson-Crick base pair shown in C partly because of a larger number of hydrogen bonds and partly because of more favourable pi-stacking interactions with adjacent base pairs.arrow_forwardAssume that the molar percentage of thymine in a double stranded DNA is 20. What are the percentages of the four bases (G, C, T, A)? b. The base content of a sample of DNA is as follows: A=31% G=31% T=19% C=19%. What conclusion can be drawn from this information?arrow_forward
- Draw the following structures and rate their relative solubilities in water (most soluble to least soluble): deoxyribose, guanine, phosphate. How are these solubilities consistent with the three-dimensional structure of double-stranded DNA?arrow_forwardGiven the following eukaryotic DNA strand, transcribe and translate the DNA into a polypeptide using the 3’ – 5’ strand as the template. You may use drawings, diagrams, colours and annotations to describe how the DNA strand will be synthesized into a functional protein. (32) (KEY: The letters SBMD are “made up” nucleic acids that depict non-coding regions in the DNA, hypothetically S pairs with B and M pairs with D). 5’ - TATAAAAASSMSBMDATGSBDCCMBDBAATBSMDSTGTGTCCTMSBAG – 3’arrow_forwardWrite the sequence of the complementary DNA strand that pairs with each of the following DNA base sequences:(a) TTAGCC(b) AGACATarrow_forward
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