Read the passage below and indicate what it means when DNA replication is described as a semiconservative process. Each of the two daughter molecules made during replication contain one strand from the parent molecule and one new strand that is complementary to it. As a result, the two daughter molecules are both identical to the parent molecule. DNA replication is a semi-conservative process because half of the parent DNA molecule is conserved in each of the two daughter DNA molecules. -revised

Read the passage below and indicate what it means when DNA replication is described as a semiconservative process. Each of the two daughter molecules made during replication contain one strand from the parent molecule and one new strand that is complementary to it. As a result, the two daughter molecules are both identical to the parent molecule. DNA replication is a semi-conservative process because half of the parent DNA molecule is conserved in each of the two daughter DNA molecules. -revised

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter8: The Structure, Replication, And Chromosomal Organization Of Dna

Section: Chapter Questions

Problem 23QP: How does DNA replication occur in a precise manner to ensure that identical genetic information is...

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Why is DNA replication called semiconservative?
Replication involves a period of time during which DNA is particularly susceptible to the introduction of mutations. If nucleotides can be incorporated into DNA at a rate of 20 nucleotides/second and the human genome contains 3 billion nucleotides, how long will replication take? How is this time reduced so that replication can take place in a few hours?
How does DNA replication occur in a precise manner to ensure that identical genetic information is put into the new chromatid? See Figures 8.12 and 8.13. FIGURE 8.12 In DNA replication, the two polynucleotide strands uncoil, and each is a template for synthesizing a new strand. A replicated DNA molecule contains one new strand and one old strand. This mechanism is called semiconservative replication. FIGURE 8.13 A close-up look at the process of DNA replication. (a) As the strands uncoil, bases are added to the newly synthesized strand by complementary base pairing with bases in the template strand. The new bases are linked together by DNA polymerase. (b) DNA synthesis can proceed only in the 5 3 direction; newly synthesized DNA on one template strand is made in short segments and linked together by the enzyme DNA ligase.
Name and describe the first four events (and associated enzymes) that happen during DNA replication at the DNA double helix (in correct sequence)
With illustrative diagrams, explain the three theories of DNA replication..
Match Column A (Description) with Column B (protein/enzyme). unwinds the double helix of DNA in replication makes a short section of RNA to act as a primer links separate stretches of DNA stabilizes the unwinding of the helix relieves the tension in the double stranded DNA (dsDNA) facilitate the switching on of genes…
in DNA replication, if the template strand is 5’-ATCCGTGTAACCTT-3’, what is the sequence of the newly synthesized DNA strand? Write the sequence from 5’ to 3’.
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If ligase was defective in a cell, which strand of DNA Replication do you think would be most affected, the leading or lagging strand? Fully explain why you think that by describing the enzyme function and the differences in replication in the leading and lagging strands.
During DNA replication, the function of RNA primers is to Group of answer choices serve as a binding site for DNA ligase separate the two strands of the double helix to open replication "bubbles" serve as starting points for DNA strand elongation by DNA polymerase in the 3' - 5' direction prevent new-separated strands of DNA from rejoining serve as starting points for DNA strand elongation in the 5' - 3' direction by DNA polymerase
List the differences and similarities in the way the twodaughter strands of DNA are synthesized at a replicationfork.
Draw the steps of DNA replication. Use the following nucleotide sequence as reference: 5’ C C T A T G C A G T G G C C A T A T T C C A A A G C A T A G C 3’