Biology: Life on Earth with Physiology (11th Edition)
11th Edition
ISBN: 9780133923001
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Chapter 18.5, Problem 1HYEW
Scientists have cloned a number of animal species, including mice, dogs, cats, horses, and cows. Could the technology of cloning be used to bring back extinct species? In principle, yes, provided that perfectly preserved DNA of the extinct species is available. Such DNA could be transferred to an egg from a closely related, living species, and the egg implanted in a surrogate mother of that species.
For example, researchers have suggested that it might be possible to clone a woolly mammoth, using an elephant surrogate mother and DNA extracted from 20,000-year-old mammoths found frozen beneath the Siberian tundra.
Most scientists, however, believe that any DNA recovered from a fossil mammoth would be far too degraded for use in cloning, and synthesizing an entire mammoth genome (its sequence is now almost fully known) is beyond the capabilities of current technology. The odds of success might be greater for another proposed project, which would use DNA from a preserved museum specimen to revive the Tasmanian tiger, an Australian mammal that has been extinct for only 70 years. If cloning recently extinct species proves to be possible, do you think it would be a good idea?
If Extinct Species Can Be Revived by Cloning?
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Herbert Boyer and Stanley Cohen pioneered the technique of DNA cloning allowing genes to be transferred from another biological species easily. Their work also gave rise to the development of different recombinant proteins with therapeutic applications like insulin and growth hormone. The former was cloned using Escherichia coli. coli in 1978. With this breakthrough, the first licensed drug produced using recombinant DNAtechnology was human insulin, developed by Genentech, licensed and marketed by Eli Lilly in 1982. Scientists were able to identify and isolate the gene fragment or the gene of interest, in this case, the gene that is responsible for producing insulin. Moreover, they were able to isolate the bacterial DNA of E. coli. The plasmid and DNA fragment were cut using a restriction enzyme. This DNA fragment was inserted into the plasmid using a DNA ligase. When the DNA fragment was then placed into the bacterial DNA, it was then introduced to the host cell (E. coli) and was then…
Dolly is the first mammal to have been successfully cloned from an adult cell Which of the following statement/s is/are most relevant to the birth of Dolly?
I. It suggests that human could be cloned.
II. It proves that specialized cells could be used to create an exact copy of the animal they came from.
III. It improves the production of milk, meat, and other products from livestock.
IV. It proves that animals could be cloned to have gene mutations that help scientists study diseases that develop in the animals.
A. II only
B. I and II
C. III, and IV
D. II, III, and IV
Which of the following statements best explain the significance of mitosis and ?
A. Both mitosis and meiosis produce diploid cells which responsible for the continuity of life.
B. Many single-celled organisms rely on mitosis and meiosis as their primary means of asexual reproduction
C. replication, cells have another interesting choice, whether they want to make an identical copy, or do they want to make four half-copies…
5) Below is an image that shows both reproductive and therapeutic cloning. Use this image to answer compare and contrast therapeutic and reproductive cloning. Are they used for similar means…etc. Once you have done that answer the question below.
a) There are two types of therapeutic cloning. What are they and how are they different?
Chapter 18 Solutions
Biology: Life on Earth with Physiology (11th Edition)
Ch. 18.1 - describe a likely scenario for the origin of life?Ch. 18.1 - How Would the experiments result charge if oxygen...Ch. 18.1 - describe, for each step in the scenario, some...Ch. 18.2 - describe scenarios for the major evolutionary...Ch. 18.2 - Uranium-235, with a half-life of 713 million...Ch. 18.2 - State the order in which these events occurred,...Ch. 18.2 - Scientists have identified a free living bacterium...Ch. 18.3 - describe fossil evidence of the earliest...Ch. 18.3 - describe the advantages that fostered the origin...Ch. 18.3 - Prob. 3CYL
Ch. 18.4 - Can ancient DNA reveal the secrets of dinosaur...Ch. 18.4 - describe the transitions and innovations...Ch. 18.4 - Prob. 1TCCh. 18.4 - Although it may never be possible to recover DNA...Ch. 18.4 - describe the advantages gained by the first plants...Ch. 18.4 - Does the mudskippers ability to walk on land...Ch. 18.5 - explain how extinction has affected the course of...Ch. 18.5 - Scientists have cloned a number of animal species,...Ch. 18.5 - describe the likely causes of mass extinctions in...Ch. 18.6 - We might be able to more easily distinguish...Ch. 18.6 - The unexpected discovery that humans interbred...Ch. 18.6 - describe the evolutionary history of humans and...Ch. 18.6 - Paleontologists recently discovered fossil...Ch. 18.6 - name and describe some characteristics of the...Ch. 18.6 - describe the key features of the most recent phase...Ch. 18 - Extinctions have occurred throughout the history...Ch. 18 - Because there was no oxygen in the earliest...Ch. 18 - Almost all of the oxygen gas in todays atmosphere...Ch. 18 - What is the evidence that life might have...Ch. 18 - In biological terms, what do you think was the...Ch. 18 - The molecule _________ became a candidate for the...Ch. 18 - Extinction a. generally does not occur except...Ch. 18 - How did the origin of photosynthesis affect...Ch. 18 - Complex cells that contain a nucleus and other...Ch. 18 - In the endosymbiotic origin of the mitochondrion,...Ch. 18 - Explain the endosymbiont hypothesis for the origin...Ch. 18 - The Sperm of early land plants had to reach the...Ch. 18 - Which of the following does not list evolutionary...Ch. 18 - Name two advantages of multicellularity for plants...Ch. 18 - Prob. 5FIBCh. 18 - Prob. 5MCCh. 18 - What advantages and disadvantages would...Ch. 18 - Prob. 6FIBCh. 18 - Prob. 6RQCh. 18 - Prob. 7FIBCh. 18 - Prob. 7RQ
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- https://www.khanacademy.org/science/biology/biotech-dna-technology/dna-cloning-tutorial/a/overview-dna-cloning That is the link for the example ^arrow_forwardNow that cloning is possible, should it be used to clone animals that are near extinction? What are the possible ramifications of this when it comes to genetic diversity and size of the gene pool?arrow_forwardThere are two time gaps in the process of cloning. What are they? (ie. What do you have to wait for?)arrow_forward
- There are a range of ethical issues associated with cloning. However, many of these are not applied to cloning plants. Explain why the idea of cloning an entire plant is generally accepted while cloning an entire human is not.arrow_forwardWhy is genetic imprinting is a major obstacle to the successful cloning of animals?arrow_forwardWhat are some of the technical challenges of cloning a mammoth? Check all that are true Ancient mammoth DNA has degraded so it is hard to know the complete genome sequence Mammoth gestation time is likely too short to allowing cloning A living surrogate mother would have to be used, which could pose problems since the closest relative to mammoths is endangered elephants A living oocyte would have to be obtained from an extant species, which could pose problems since the closest relative to mammoths is endangered elephants Mammoths lived so long ago that they used a different genetic code than modern animals There are no enzymes in existence that could ligate together mammoth DNA sequence with elephant sequence Mammoths probably had egg shells, which would be hard to penetrate with a needlearrow_forward
- Scientists have reportedly isolated short fragments of DNA from fossilized dinosaur bones hundreds of millions of years old. The technique used to isolate this DNA is the polymerase chain reaction, which is capable of amplifying very small amounts of DNA a millionfold. Critics have claimed that the DNA isolated from dinosaur bones is not purely of ancient origin, but instead has been contaminated by DNA from present-day organisms such as bacteria, mold, or humans. What precautions, analyses, and control experiments could be carried out to ensure that DNA recovered from fossils is truly of ancient origin?arrow_forwardIf you were to sequence a human genome today, how would the sequencing differ from that done during the Human Genome Project? Choose only the best answer. You would still use Sanger sequencing. You would still assemble the sequencing reads into a genome using bioinformatics. You still need to clone the DNA fragments prior to sequencing them. All three of the other statements are true.arrow_forwardWhat are some possible research questions and practical applications that could be addressed by creating organisms with artificial chromosomes and synthetic genomes? What might be some potential safety, environmental, social, and ethical concerns about creating organisms with synthetic genomes?arrow_forward
- You are studying a new gene “X” that you think controls skin color in Bearded Dragons. In order to determine what gene X does you need lots of gene X DNA to work with. So, you decide to amplify it through the process known as PCR. You have a forward and a reverse primer that have been designed to gene Xf – a gene in frogs that is similar to the one found in the Bearded Dragon. You are pretty sure that these two primers will work in Bearded Dragons, so you decide to go ahead with the PCR. In frogs, the Forward Xf primer binds gene Xf between nucleotides 32 and 47. The Reverse Xf primer binds between nucleotides 1110 and 1135. What size PCR product would these two primers create if they amplified the frog gene Xf?? bparrow_forwardWhich of the following most accurately describes the process of DNA cloning? set of laboratory procedures that consist of cutting a segment of DNA with restriction enzymes set of laboratory procedures that uses living cells to mass-produce specific DNA fragments set of laboratory procedures by which a DNA fragment is transferred from a living organism to a SNP chip the manipulation of DNA fragments in a laboratory using modern techniques of molecular biology set of laboratory procedures that consist of isolating of a DNA fragment from a living organism and inserting it into a plasmidarrow_forwardGive typing answer with explanation and conclusion If you want to identify genes linked to autism in a mouse model, which genetic approach or approaches could you use? (Mark all that apply) A) Reverse Genetics B) Forward Genetics C) Optogenetics D) Population Geneticsarrow_forward
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