Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Chapter 11.3, Problem 2COMQ
In the lagging strand, DNA is made in the direction _________ the replication fork and is made as __________.
a. toward, one continuous strand
b. away from, one continuous strand
c. toward, Okazaki fragments
d. away from, Okazaki fragments
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In the lagging strand, DNA is made in the direction _________ the replication fork and is made as __________.
a. toward, one continuous strand
b. away from, one continuous strand
c. toward, Okazaki fragments
d. away from, Okazaki fragments
DNA replication is called semiconservative because ________________ of the original duplex appears in the duplex formed in replication.
a.
hardly any
b.
none
c.
half
d.
all
e.
most
A new type of nucleic acid molecule is found have a base composition of 29% adenine, 19% thymine, 21% cytosine and 31% guanine. The molecule is probably:
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single stranded DNA
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Chapter 11 Solutions
Genetics: Analysis and Principles
Ch. 11.1 - 1. The complementarity of DNA strands is based on...Ch. 11.1 - 2. To make a new DNA strand, which of the...Ch. 11.1 - 3. The model that correctly describes the process...Ch. 11.2 - 1. A site in a chromosome where DNA replication...Ch. 11.2 - The origin of replication in E. coli contains a....Ch. 11.3 - 1. The enzyme known as ______ uses ________ and...Ch. 11.3 - In the lagging strand, DNA is made in the...Ch. 11.4 - 1. DNA polymerase III is a processive enzyme,...Ch. 11.4 - 2. The proofreading function of DNA polymerase...Ch. 11.5 - 1. In eukaryotes, DNA replication is initiated at...
Ch. 11.5 - 2. Which of the following statements regarding DNA...Ch. 11.5 - 3. In eukaryotes, RNA primers are primarily...Ch. 11.5 - 4. To synthesize DNA, what does telomerase use as...Ch. 11 - What key structural features of the DNA molecule...Ch. 11 - 2. With regard to DNA replication, define the term...Ch. 11 - Which of the following statements is not true?...Ch. 11 - The compound known as nitrous acid is a reactive...Ch. 11 - One way that bacterial cells regulate DNA...Ch. 11 - 6. The chromosome of E. coli contains 4.6 million...Ch. 11 - Here are two strands of DNA. DNA polymerase The...Ch. 11 - A DNA strand has the following sequence:...Ch. 11 - 9. List and briefly describe the three types of...Ch. 11 - 10. As shown in Figure 11.5, five DnaA boxes are...Ch. 11 - 11. Obtain two strings of different colors (e.g.,...Ch. 11 - Sometimes DNA polymerase makes a mistake, and the...Ch. 11 - 13. A short genetic sequence, which may be...Ch. 11 - Single-strand binding proteins keep the two...Ch. 11 - 15. In the following drawing, the top strand is...Ch. 11 - Describe the three important functions of DnaA...Ch. 11 - 17. Draw a picture that illustrates how DNA...Ch. 11 - What is an Okazaki fragment? In which strand of...Ch. 11 - Discuss the similarities and differences in the...Ch. 11 - 20. Explain the proofreading function of DNA...Ch. 11 - 21. What is a processive enzyme? Explain why...Ch. 11 - 22. What enzymatic features of DNA polymerase...Ch. 11 - 23. As shown in Figure 11.24, telomerase attaches...Ch. 11 - If a eukaryotic chromosome has 25 origins of...Ch. 11 - Prob. 25CONQCh. 11 - A diagram of a linear chromosome is shown here....Ch. 11 - As discussed in Chapter 18, some viruses contain...Ch. 11 - 28. Telomeres contain a 3′ overhang region, as...Ch. 11 - 1. Answer the following questions pertaining to...Ch. 11 - An absentminded researcher follows the steps of...Ch. 11 - Figure 11.4b shows an autoradiograph of a...Ch. 11 - 4. As described in Table 11.3, what is the...Ch. 11 - The technique of dideoxy sequencing of DNA is...Ch. 11 - 6. Another technique described in Chapter 21 is...Ch. 11 - The complementarity of its two strands is the...Ch. 11 - Compare and contrast DNA replication in bacteria...Ch. 11 - 3. DNA replication is fast, virtually error-free,...
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- The small pocket of area near the replication fork that contains associated enzymes and proteins involved in DNA replication is called the a. replication machine b. replication region c. replication origin d. replication bubblearrow_forwardDuring DNA replication, the Okazaki fragments are Select one: O a. single-strand RNA O b. RNA-DNA hybrid C. double-strand DNA O c. O d. single-stranded DNAarrow_forwardWhy is an RNA primer necessary for DNA replication a. The RNA primer is necessary for the activity of DNA ligase b. The RNA primer creates the 3’ end for DNA polymerase to add nucleotides c. DNA polymerase can only add nucleotides to RNA d. RNA primer is not necessary for DNA replicationarrow_forward
- Suppose a double-stranded molecule similar to DNA replicates itself, such that one molecule contains two old strands and the other molecule contains two new strands. Such replication would be an instance of __________ replication. a. semiconservative b. conservative c. dispersive d. exact e. complementaryarrow_forwardFour enzymes are listed below, match each to the correct definition. Definition Enzyme 4. Ligase 5. Primase 6. Gyrase 7. Helicase Answer a. Unwinds DNA b. Relieves tension in DNA during unwinding c. Links sugars and phosphates together d. Builds RNA primers C В Aarrow_forwardDNA polymerase can only add nucleotides to an existing chain, so _______ is required.a. a primer b. helicase c. a lagging strandd. a leading strandarrow_forward
- This is the original strand of DNA: ATG AAG TTT GGC TAA Which option would represent a frameshift mutation due to deletion during replication? a. ATG AAG TTT GGC GCA TAA b. ATG UAA GTT TGG CTA A c. ATG TTT GGC TAA d. ATG AAG TTG GCT AAarrow_forwardIf the code for an amino acid is ATG on the DNA molecules, this code on the transfer RNA molecule may be written as ________. * a. ATG b. CTG c. AUG d. CTA 2. Between which types of compounds in a double-stranded DNA molecule must the bonds break before replication takes place? * a. phosphate – base b. sugar-phosphate c. adenine - thymine d. sugar – basearrow_forwardJust prior to DNA replication the cytosine in the sequence GTTCATTG is deaminated and it is not repaired before the DNA is replicated. Which of the following is the point mutation you expect in this sequence after the segment has undergone 2 rounds of DNA replication? a. GTTUATTG O b. GTTTATTG C. GTTGATTG d. GGTAATTG e. GTTAATTGarrow_forward
- A fragment of DNA has the sequence 5'-ATCCGCT-3'. Following DNA replication, the complementary strand is 3'-TAAGCGA-5'. What type of mutation occurred? a. Frameshift b. Transversion c. Pyrimidine dimer d. Transitionarrow_forwardWhich statement about Okazaki fragments is true? Select one: a. DNA polymerase doesn’t need a primer to build these fragments b. They act as a primer that initiates DNA replication. c. They correct errors made during earlier phases of DNA replication. d. They are necessary because DNA polymerase can only build DNA in the 5’ to 3’ direction, so for one of the strands at each fork, the DNA polymerase can only buildaway from the fork. e. They prevent the ends of chromosomes from shortening with every replication.arrow_forwardEach time double-stranded (ds) DNA is replicated, the resulting copies of DNA include: A. One parent (original) strand and one daughter (new) strand B. Either two parent (original) strands or two daughter (new) strands C. Four parent strands D. Four daughter strandsarrow_forward
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