Q: Discuss the differences between the compaction levels of metaphase chromosomes and those
Discuss the differences between the compaction levels of metaphase chromosomes and those of interphase chromosomes. When would you expect gene transcription and DNA replication to take place, during M...
See AnswerQ: Sometimes DNA polymerase makes a mistake, and the wrong nucleotide is
Sometimes DNA polymerase makes a mistake, and the wrong nucleotide is added to the growing DNA strand. With regard to pyrimidines and purines, two general types of mistakes are possible. The addition...
See AnswerQ: In eukaryotes, what is meant by the term DNA replication licensing
In eukaryotes, what is meant by the term DNA replication licensing? How does the process occur?
See AnswerQ: One way that bacterial cells regulate DNA replication is through GATC methylation
One way that bacterial cells regulate DNA replication is through GATC methylation sites within the origin of replication. Would this mechanism work if the DNA was conservatively (rather than semiconse...
See AnswerQ: The chromosome of E. coli contains 4.6 million bp
The chromosome of E. coli contains 4.6 million bp. How long will it take to replicate its DNA? Assuming that DNA polymerase III is the primary enzyme involved and that it can actively proofread during...
See AnswerQ: The period between meiosis I and meiosis II is called interphase II
The period between meiosis I and meiosis II is called interphase II. Does DNA replication take place during interphase II?
See AnswerQ: Answer the following questions pertaining to the experiment of Figure 11.
Answer the following questions pertaining to the experiment of Figure 11.3. A. What would be the expected results if the Meselson and Stahl experiment were carried out for four or five generations?...
See AnswerQ: As described in Table 11.3, what is the difference
As described in Table 11.3, what is the difference between a rapidstop and a slow-stop mutant? What are different roles of the proteins that are defective in rapid-stop and slow-stop mutants? From Fi...
See AnswerQ: Another technique described in Chapter 21 is polymerase chain reaction (PCR
Another technique described in Chapter 21 is polymerase chain reaction (PCR) which is based on our understanding of DNA replication. In this method, a small amount of double-stranded template DNA is m...
See AnswerQ: Compare and contrast DNA replication in bacteria and eukaryotes.
Compare and contrast DNA replication in bacteria and eukaryotes.
See AnswerQ: Explain how a mutagen can interfere with DNA replication to cause a
Explain how a mutagen can interfere with DNA replication to cause a mutation. Give two examples.
See AnswerQ: Review the concept of an RNA world described in Section 17.
Review the concept of an RNA world described in Section 17.1. Discuss which ncRNAs described in Table 17.1 may have arisen during the RNA world, and which probably arose after the modern DNA/RNA/prote...
See AnswerQ: When DNA replication occurs over an apurinic site, what is the
When DNA replication occurs over an apurinic site, what is the probability that a mutation will occur?
See AnswerQ: a. Why is DNA polymerase said to be template-directed
a. Why is DNA polymerase said to be template-directed? b. Why is DNA replication a self-correcting process?
See AnswerQ: 1. Which is not a nucleotide base in DNA?
1. Which is not a nucleotide base in DNA? a. adenine b. glutamine c. guanine d. thymine e. cytosine f. all are in DNA 2. What are the base-pairing rules for DNA? a. A–G, T–C b. A–T, G–C c. A–C, T–G d...
See AnswerQ: When DNA replication begins, ______. a. the two DNA
When DNA replication begins, ______. a. the two DNA strands unwind from each other b. the two DNA strands condense for base transfers c. old strands move to find new strands
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