Biology: Life on Earth (11th Edition)
11th Edition
ISBN: 9780134256283
Author: Audesirk
Publisher: PEARSON
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Chapter 12, Problem 6FTB
Sometimes mistakes are made during
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Sometimes mistakes are made during DNA replication. If uncorrected, these mistakes are called _________. When a single nucleotide is changed, this is called a(n)_________.
When DNA is replicated, two new DNA double helices areformed, each consisting of one parental strand and onenew, daughter strand. For this reason, DNA replication iscalled________ .
Single-stranded regions of DNA are attacked by nucleasesin the cell, yet portions of DNA are in a single-stranded form during the replication process. Explain.
Chapter 12 Solutions
Biology: Life on Earth (11th Edition)
Ch. 12 - 1. If a parental DNA strand has the base sequence...Ch. 12 - 2. What happens at the conclusion of DNA...Ch. 12 - An insertion mutation occurs when a nucleotide is...Ch. 12 - The rungs of the DNA double helix consist of any...Ch. 12 - The “rungs” of the DNA double helix are held...Ch. 12 - 1. DNA consists of subunits called_________. Each...Ch. 12 - The subunits of DNA are assembled by linking...Ch. 12 - The “base pairing rule” in DNA is that adenine...Ch. 12 - 4. When DNA is replicated, two new DNA double...Ch. 12 - The DNA double helix is unwound by an enzyme...
Ch. 12 - 6. Sometimes mistakes are made during DNA...Ch. 12 - Describe the experimental evidence that DNA is the...Ch. 12 - 2. Draw the general structure of a nucleotide....Ch. 12 - Describe the structure of DNA. Where are the...Ch. 12 - How is information encoded in the DNA molecule?Ch. 12 - 5. Describe the process of DNA replication.
Ch. 12 - How do mutations occur? Describe the principal...Ch. 12 - 1. In an alternate universe, although proteins are...Ch. 12 - Prob. 2AC
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- DNA contains many hydrogen bonds. Are hydrogen bonds stronger or weaker than covalent bonds? What are the consequences of this difference in strength?arrow_forwardin 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’.arrow_forwardList the differences and similarities in the way the twodaughter strands of DNA are synthesized at a replicationfork.arrow_forward
- Why is DNA replication described as “semiconservative?”arrow_forwardSingle-stranded regions of DNA are attacked by nucleases in the cell, yet portions of DNA are in a singlestranded form during the replication process. Explain.arrow_forwardwhy is only one nucleotide added at the time during DNA replication?arrow_forward
- The DNA polymerase cannot start making a new DNA polymer out of nothing, it needs preexisting nucleic acid to hook the new DNA onto. What is this preexisting nucleic acid called, what enzyme makes it, and what nucleic acid is the preexisting nucleic acid made of?arrow_forwardIf DNA synthesis occurs without error, the resulting double-stranded DNA is an exact copy of the original double-stranded DNA (exact in that the base sequences are identical). Does this mean then that in DNA synthesis, the two single-stranded templates are identical? Explain.arrow_forwardWhy does DNA replication need to be error-free? Why does the DNA need to be a “careful reader?” What is the importance of DNA replication to DNA’s function of storing genetic information?arrow_forward
- DNA is a very long strand and the cells are very small, how do cells overcome this during DNA replication?arrow_forwardReplication of DNA produces two daughter DNA molecules in which a. one daughter molecule contains both parent strands and one daughter molecule contains both newly synthesized b. each daughter molecule contains one percent strand and one newly synthesized strand c. each daughter molecule contains two newly synthesized strands d. each daughter molecule contains both parent strandsarrow_forward___________ replication forks are created at the origin of replication.arrow_forward
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