Genetics: From Genes to Genomes
6th Edition
ISBN: 9781259700903
Author: Leland Hartwell Dr., Michael L. Goldberg Professor Dr., Janice Fischer, Leroy Hood Dr.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 6, Problem 20P
| a. | Do any strands of |
| b. | RNA primers in Okazaki fragments are usually very short, less than 10 |
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a. Do any strands of nucleic acid exist in nature inwhich part of the strand is DNA and part is RNA?If so, describe when such strands of nucleic acidare synthesized. Is the RNA component at the 5′end or at the 3′ end?b. RNA primers in Okazaki fragments are usually veryshort, less than 10 nucleotides and sometimes asshort at 2 nucleotides in length. What does this facttell you about the processivity of the primaseenzyme—that is, the relative ability of the enzymeto continue polymerization as opposed to dissociatingfrom the template and from the molecule beingsynthesized? Which enzyme is likely to have a greaterprocessivity, primase or DNA polymerase III?
Do any strands of nucleic acid exist in nature in which part of the strand is DNA and part is RNA? If so, a.describe when such strands of nucleic acid are synthesized. Is the RNA component at the 5' end or at the 3' end?
Name
a.) (
pair. Indicate hydrogen bonds with dashed lines, number the atoms in the
bases according to IUPAC convention, and circle the pyrimidine. Additionally,
indicate where the sugar is attached to the base, the major groove, and the
minor groove.
8.)
Looking at the bases from above, draw a Watson-Crick C-G base
b.) (
triple helix (shown below). In this triple helix, a third strand binds in the major
groove via base pairs with the existing Watson-Crick bases. This additional
base pair is called a Hoogsteen base pair and is indicated by an asterisk
followed by the third base. On your drawing add a cytosine in the appropriate
location to indicate a CG*C base pair.
, it is possible for nucleic acids to form a structure known as a
c.) (
between turns, glycosidic bond conformation and sugar conformation differs
between A-form DNA and Z-form DNA, Which one is PNA?
Indicate (possibly using a table) how the strand width, distance
Chapter 6 Solutions
Genetics: From Genes to Genomes
Ch. 6 - Griffith, in his 1928 experiments, demonstrated...Ch. 6 - Griffith, in his 1928 experiments, demonstrated...Ch. 6 - During bacterial transformation, DNA that enters a...Ch. 6 - Nitrogen and carbon are more abundant in proteins...Ch. 6 - If 30 of the bases in human DNA are A, a what...Ch. 6 - Which of the following statements are true about...Ch. 6 - Imagine you have three test tubes containing...Ch. 6 - What information about the structure of DNA was...Ch. 6 - A portion of one DNA strand of the human gene...Ch. 6 - When a double-stranded DNA molecule is exposed to...
Ch. 6 - A particular virus with DNA as its genetic...Ch. 6 - The underlying structure of DNA is very simple,...Ch. 6 - Prob. 13PCh. 6 - Bacterial transformation and bacteriophage...Ch. 6 - The CAP protein is shown bound to DNA in Fig....Ch. 6 - In Meselson and Stahls density shift experiments...Ch. 6 - When Meselson and Stahl grew E. coli in 15N medium...Ch. 6 - If you expose human tissue culture cells for...Ch. 6 - Draw a replication bubble with both replication...Ch. 6 - a. Do any strands of nucleic acid exist in nature...Ch. 6 - As Fig. 6.21 shows, DNA polymerase cleaves the...Ch. 6 - The bases of one of the strands of DNA in a region...Ch. 6 - Replicating structures in DNA can be observed in...Ch. 6 - Indicate the role of each of the following in DNA...Ch. 6 - Draw a diagram of replication that is occurring at...Ch. 6 - Figure 6.18 depicts Watson and Cricks initial...Ch. 6 - Researchers have discovered that during...Ch. 6 - A DNA synthesizer is a machine that uses automated...Ch. 6 - Bacterial cells were coinfected with two types of...Ch. 6 - A yeast strain with a mutant spo11- allele has...Ch. 6 - Imagine that you have done a cross between two...Ch. 6 - The Neurospora octad shown came from a cross...Ch. 6 - From a cross between e f g and e f g strains of...Ch. 6 - In Step 6 of Fig. 6.27, the resolvase enzyme...Ch. 6 - Figure 6.31shows four potential outcomes of...Ch. 6 - Each of the substrates for site-specific...Ch. 6 - Prob. 37PCh. 6 - Suppose that you could inject a wild-type mouse...Ch. 6 - C31 is a type of bacteriophage that infects...Ch. 6 - Cre is a recombinase enzyme encoded by a gene in...Ch. 6 - Like Cre/loxP recombination, site-specific...
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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
- Given the following Wild Type and Mutated DNA sequences: 1.) Identify where the base pair change occurs ( what letter changed?) 2.) For BOTH sequences, write the mRNA strands, define the codon regions and amino acid sequences. 3.) Describe what kind of mutation has occurred (missense, nonsense, or silent), and what effect this may have on the protein. Wild Type DNA Sequence: 3' - AGGCTCGCCTGT - 5' Mutated DNA Sequence: 3' - AGTCTCGCCTGT - 5'arrow_forwardThe formation of a double-stranded structure must obey the rule that adenine hydrogen bonds to thymine (or uracil in RNA) and cytosine hydrogen bonds to guanine. Discuss reasons why complementarity is an important feature of DNA and RNA structure and function.arrow_forwarda. Write the structural formula of GAC, a portion of DNA. Write the complementary strand adjacent to it so that the complementary bases are side by side. Connect the appropriate base pairs. b. Sticking to the convention of writing the nucleotide sequence in the 5'-3' direction, what is the nucleotide sequence of the DNA strand complementary to ATGCACCATGCT?arrow_forward
- 29.) equalities now called Chargaff's rule. Biochemist Erwin Chargaff was the first to note that, in DNA, [A]=[T] and [G]=[C], A) Using this rule, determine the percentages of all the bases in DNA that is 20% thymine. [A] = [C] = [G] [T] = 20% %3D - B) If a single strand of RNA is 20% uracil, what can you predict about the percentages of the remaining bases and why?arrow_forwardTo create a DNA:RNA hybrid from a short stretch of DNA with the sequence 5'-GGCTAAGTATGCCTAGTAGC-3', design the corresponding RNA sequence. Indicate the sequence in a 5' to 3' manner. What type of helix (A, B or Z) will this double-stranded nucleic acid form?arrow_forwardExplain why indels that involve just one or two nucleotides have more severe consequences than indels that involve three contiguous nucleotides.arrow_forward
- Describe the d=features of the following DNA-binding domains and how they interact with DNA. Helix-turn-Helix Zinc Finger Leucine Zipper Helix-loop-Helixarrow_forwardThe following is diagram of a generalized tetranucleotide. Carbons exist at corners on the shapes and phosphate groups are filled circles. A. Is this a DNA or an RNA Molecule? B. Where is the 3’ end of this tetranucleotide? C. Given that the DNA strand which served as a template for the synthesis of this tetranucleotide was composed of the bases 5’-ACAG-3’, where are the expected bases?arrow_forward11) Examine the following two DNA sequences. Sequence 1: ATGCGATGCTAGCAT Sequence 2: ATGCGATGATAGCAT If both of these sequences code for proteins, how might the function of protein 2 differ from the function of protein 1? Use the table below for assistance. U C A G บบน UUC UUA UUG CUU CUC CUA CUG U Phe GUUT GUC GUA GUG Leu Leu AUU AUC lle AUA AUG Met or Start Val Ceweg 232 www... UCU UCC UCA UCG CCU CCC CCA CCG ACU ACC ACA ACG C GCU GCC GCA GCG Ser Pro Thr Ala CAU CAC CAA CAG A AAU AAC AAA AAG UAU U UAC C UAA Stop UGA Stop A UAG Stop UGG Trp G Tyr GAA GAG His Gin Asn Lys GAU GAC Asp G c] Glu UGU UGC CGU CGC CGA CGG AGU AGC AGA AGG GGU GGC GGA GGG Cys Arg Ser Arg Gly U C A G U C A G U C A G by Calin me press A) Protein 1 and protein 2 will function exactly the same. B) Protein 1 will be shorter than protein 2, so they will not function the same. C) Protein 2 will be shorter than protein 1, so they will not function the same. D) Protein 2 has a different sequence, so it will function…arrow_forward
- A DNA fragment was sequenced; however, the scatter-brained professor lost track of the direction of the sequence. The resulting sequence is given, but without the 3’ or 5’ ends identified. NOTE the sequence listed is double stranded. (a) Find all START codons (in both directions and for both strands) and report the sequence of the two start codon(s) plus the next 3 bases downstream (i.e. 5’ to 3’ direction). (b) One of the start codons has a STOP codon 6 codons downstream, list the 21 bases that contain the target sequence and 7 amino acids that this (very short) open reading frame would translate to. (c) Identify the 3’ or 5’ ends for lables1- 4.arrow_forwardA duplex DNA oligonucleotide in which one of the strands has the sequence TAATACGACTCACTATAGGG has a melting temperature (tm) of 59 °C. If an RNA duplex oligonucleotide of identical sequence (substituting U for T) isconstructed, will its melting temperature be higher or lower?arrow_forwardA closed circular duplex DNA has a 100-bp segment of alternating C and G residues. On transfer to a high salt solution, the segment undergoes a transition from the B conformation to the Z conformation. What is the change in its linking number, writhing number, and twist?arrow_forward
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