Nutrition
15th Edition
ISBN: 9781337906371
Author: Sizer, Frances Sienkiewicz., WHITNEY, Ellie
Publisher: Cengage Learning,
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Chapter 12, Problem 19SC
Summary Introduction
Introduction:
Selective breeding is act of selecting certain breeds or strains of organism and allowing them to breed to obtain offspring of desirable characters.
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Which of the following does not apply to mutations?a. They occur to cause adaptive changes in response to the environment.b. They are usually either harmful or neutral.c. They are only inherited if they occur in a sperm or egg cell.d. They often occur when DNA is copied.
Much research has been done in the cloning of animals; a tadpole in 1954, Dolly the
sheep in 1997, and the endangered gaur are just a few of the "famous" cloned
animals. However, cloning of animals has met with limited success. Which
statement is a scientific argument against the cloning of animals?
Animals on the endangered species list could be cloned, and their populations
A
would increase.
Most cloned animals have a compromised immune system and have a low
survival rate.
Cloning of animals can be beneficial in the treatment and prevention of many
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New technologies and scientific equipment have made cloning of animals safe.
The mutation rate is
a. the likelihood that a new mutation will occur in a given gene.
b. too low to substantially change allele frequencies in a population.
c. lower for mutations that create beneficial alleles.
d. All of the above are true of the mutation rate.
Chapter 12 Solutions
Nutrition
Ch. 12 - Prob. 1RQCh. 12 - Prob. 2RQCh. 12 - Prob. 3RQCh. 12 - Prob. 1SCCh. 12 - Prob. 2SCCh. 12 - Prob. 3SCCh. 12 - Prob. 4SCCh. 12 - Prob. 5SCCh. 12 - Prob. 6SCCh. 12 - Infants under one year of age should never be fed...
Ch. 12 - Which of the following is correct concerning...Ch. 12 - Irradiation can a. destroy vitamins. b. sterilize...Ch. 12 - Prob. 10SCCh. 12 - It is possible to eliminate all toxins from your...Ch. 12 - Prob. 12SCCh. 12 - Prob. 13SCCh. 12 - Compared with conventionally grown produce,...Ch. 12 - Prob. 15SCCh. 12 - Prob. 16SCCh. 12 - Prob. 17SCCh. 12 - Prob. 18SCCh. 12 - Prob. 19SCCh. 12 - Prob. 20SCCh. 12 - Prob. 1CTCh. 12 - Suggest possible motivations of Industry, growers,...
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- Define gene mutation Group of answer choices A. the process whereby organisms better adapted to their environment tend to survive and produce more offspring. B. the introduction of genetic material (by interbreeding) from one population of a species to another, thereby changing the composition of the gene pool of the receiving population C. variation in the relative frequency of different genotypes in a small population, owing to the chance disappearance of particular genes as individuals die or do not reproduce. D. A rare and random change in a gene that can be bad or benef icial depending on the environment .arrow_forwardWhich of the following might occur in the same geographic area but actually be an example of micro-allopatry? A. A population of moths that becomes polymorphic for mating pheromones B. Jumping spiders in which a new mutation leads some males to do a novel mating dance to attract females C. Chromosomal duplication in a plant that reproductively isolate it D. Flightless aphids where a mutation leads a portion of the population to specialize on a different food plantarrow_forwardA. When Dr. Linda Fedigan conducted her studies on menopause, she collected data from the following sources: a. data collected on seven primate species. b. data collected on her studies of macaques. c. all of the above d. ethnographic data from traditional societies. B. several problems that may arise when geneticists undertake studies on indigenous persons without understanding their culture. Which of the following is one of these problems? a. People had samples taken without their knowledge, during surgeries. b. Samples were later used for other studies that were not authorized. c. Samples are being used to produce cures, but no money is given back. d. All of the above are truearrow_forward
- Adaptation can best be described as A. The change in the genetic characteristics of a population of organisms over time B. Evolutionary changes on a large scale C. Gives us Genotype frequency of a population that is not evolving D. Any feature of the organism that leads to improvement in performance in the environmentarrow_forwardWhich of the following is the mutation rate? a. the likelihood that a new mutation will occur in a given gene. b. too low to substantially change allele frequencies in a population. c. lower for mutations that create beneficial alleles. d. All of the above are true of the mutation rate.arrow_forwardExplain how captive breeding can help with endangered species recovery, and give an example. Now explain why cloning could never be, in itself, an effective response to species loss.arrow_forward
- A scientist cloned a sheep. Which of these statement is true about the cloned sheep? a. It lacks the genes for reproduction b. It looks the same but has different genes c. It has the genes that are identical to the original sheep d. It has new genes and traitsarrow_forwardThe best argument for how an unprotected species can evolve to mimic a second protected species (distasteful or noxious) and thus obtain protection is by A. Random changes in the appearance of the unprotected species that lead to increased fitness due to greater similarity with the protected species B. Individuals deciding that they need protection and mutating to look like the protected species C. Individuals changing their diet to increase pigment production to look like the protected species D. Natural selection for more advanced traits that are better to the inferior traits of organisms that do not look like the protected species E. Behavioral modification of the unprotected species to act like the protected speciesarrow_forwardHorizontal gene transfer is a process in which genetic material from an organism is a. transferred from cell to cell. b. transferred to its offspring. c. transferred to another organism that is not the offspring of the first organism. d. released into the environment.arrow_forward
- In a hybrid zone, reinforcement often prevents which of the following? a. Fusion b. Incipient species c. Secondary contact d. Hybrid infertilityarrow_forwardScenario C: Your Uncle raises beef cattle and is considering adding low amounts of antibiotics to their feed because he heard it makes them grow larger. Explain to him: The concept of using antibiotics for "essential use only." The process of natural selection. How low levels of antibiotics select for resistant bacteria. How these antibiotic resistant bacteria can then be harmful to not only cows, but also humans.arrow_forwardAn experiment has been initiated in a laboratory where recombinant DNA technology has been used to substitute the gene responsible for change of colour in chameleon with another gene responsible for “glow- in-the-dark”. If this experiment is successful, chameleons carrying the “glow-in-the-dark” gene will not be able to change their colours any longer. Discuss the implication of these results in terms of ethics and conservation biology.arrow_forward
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