Biology: Life on Earth Plus Mastering Biology with Pearson eText -- Access Card Package (11th Edition)
11th Edition
ISBN: 9780134153742
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Chapter 12, Problem 1AC
In an alternate universe, although proteins are still constructed of combinations of 20 different amino acids, DNA is constructed of six different
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A researcher sequences the genome of a variety of bacterial and eukaryotic cells. She finds that the bacterial genome is smaller, but that there are more genes for a given number of base pairs in the eukaryotic cells. In other words, there are fewer genes per unit of length of DNA in the eukaryotic cells. What do you predict she will find if she examines the DNA more closely?
A. All of the bacterial DNA consists of coding sequences, but this is not true of the eukaryotic DNA.
B. There are more repetitive sequences in the eukaryotic DNA than in the bacterial DNA.
C. There are densely packed genes in the eukaryotic DNA that were not immediately distinguishable during the first analysis.
D. The bacteria have larger quantities of noncoding DNA than the eukaryotic cells.
Is it possible for their to be a mutation where an individual has incomplete or missing sets of chromosomes? or Would that simply result in the loss of life? I would say an easier way to describe a genome is by calling it either a blueprint of DNA or referring it as one full set of genetic information.
One of the following is a characteristic of eukaryotic genetic material?
1. Eukaryotic genetic material is compacted by wrapping the double-helix around histone proteins to form nucleosomes.
2. Eukaryotic genetic material consists of supercoiled circular DNA molecules complexed with proteins into chromosomes.
3. Eukaryotic genetic material consists of relaxed linear DNA molecules complexed with RNA into a 30 nm fiber.
4. Eukaryotic genetic material is compacted by folding linker regions around non-histone proteins to form a scaffold.
Chapter 12 Solutions
Biology: Life on Earth Plus Mastering Biology with Pearson eText -- Access Card Package (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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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
- Refer to Figure 2 and compare this with the DNA model in Figure 1. a. In what ways are they similar? b. In what ways are they different? c. What is the biological significance of such differences? Why is the DNA referred to as the genetic material?arrow_forwardWhy do you think all organisms use nucleic acids for encoding genetic information? Why not use proteins or carbohydrates? What advantages might DNA have as the source of genetic information?arrow_forwardWhat percentage of the DNA in the genome actually corresponds to genes? How much is actually protein-coding exons? What makes up the rest?arrow_forward
- Why do you think nucleic acids were originally not considered to be carriers of genetic information?arrow_forwardIf you are given a sample of chromosomal DNA, what experiment could you perform to determine whether the DNA is prokaryotic or eukaryotic? What would your hypothesis be and describe how your expected results would be supported or not supported?arrow_forwardSuppose that life exists elsewhere in the universe. All life must contain some type of genetic information, but alien genomes might not consist of nucleic acids and have the same features as those found in the genomes of life on Earth. What might be the common features of all genomes, no matter where they exist?arrow_forward
- In Avery et al.’s experiments, they used a general proteinase that can break down many types of protein, rather than a protein-degrading enzyme that broke down only one type of protein. Why was this still not sufficient to show that protein was not the genetic material?arrow_forwardIf most of the DNA in Bacteria and Archaea is coding DNA and much of the DNA in higher plants and animals is non-coding (does not code for proteins), does this fact make it reasonable that the single-celled Bacteria and Archaea have lower mutation rates per base-pair than do eukaryotes? Why or why not?arrow_forwardIf the DNA of one human cell is stretched out, it would be almost 6 feet long and contain over three billion base pairs. How does all this fit into the nucleus of one cell?arrow_forward
- Do most cells contain complete copies of an organism’s DNA? Do most cells express all of the genes contained in their DNA?arrow_forwardWhat does the future hold for genomes? How will they be different in 100, 1,000, 1 million, or 1 billion years? Make this a long discussion.arrow_forwardWhy do we study the DNA sequence of human organism?arrow_forward
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