2 SEM CARDLESS ACC W/RAVEN TEXT
12th Edition
ISBN: 9781265810467
Author: Raven
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Textbook Question
Chapter 21, Problem 1U
Artificial selection is different from natural selection because
a. artificial selection is not capable of producing large changes.
b. artificial selection does not require
c. natural selection cannot produce new species.
d. breeders (people) choose which individuals reproduce based on desirability of traits.
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Which of the following best explains the role mutations play in natural selection?A. Most mutations are negative and result in the extinction of the entire speciesB. Mutations may appear for one or two generations, but they usually disappear quickly.C. If the environment changes, an existing organism develops a mutation that will help them to survive.D. Some mutations give individuals an advantage in their environment, allowing them to survive and reproduce.D is my answer is it correct?
1) What does the term Natural Selection mean?
Select one:
a.The number and relative frequency of alleles present in a particular population.
b.The process through which individuals with certain traits tend to produce more surviving offspring that individuals without those traits.
c. Any change in the hereditary material of an organism.
What is the difference between evolution, natural selection, and artificial selection?
A.
Evolution is a genetic change in a population over time which can occur through natural selection.
Artificial selection is the differential reproduction of individuals in a population to promote the characteristics chosen by the breeder.
B.
Natural selection is the change of allele frequencies in a population over time.
Evolution leads to differential survival and reproduction of individuals.
Artificial selection has produced domesticated animals and plants.
C.
Evolution is a mechanism of artificial selection.
Natural selection is a form of artificial selection in which nature selects the characteristics that are most beneficial to a species.
D.
Artificial selection is a mechanism of evolution and is the main process of domesticating animals and plants for human use.
Natural selection is the same as evolution.
Chapter 21 Solutions
2 SEM CARDLESS ACC W/RAVEN TEXT
Ch. 21.1 - Prob. 1LOCh. 21.1 - Prob. 2LOCh. 21.2 - Prob. 1LOCh. 21.2 - Distinguish between demonstrating that evolution...Ch. 21.3 - Contrast the processes of artificial and natural...Ch. 21.3 - Prob. 2LOCh. 21.4 - Prob. 1LOCh. 21.4 - Prob. 2LOCh. 21.4 - Prob. 3LOCh. 21.5 - Explain the evolutionary significance of...
Ch. 21.5 - Prob. 2LOCh. 21.6 - Prob. 1LOCh. 21.6 - Prob. 2LOCh. 21.7 - Characterize the criticisms of evolutionary theory...Ch. 21.7 - Prob. 2LOCh. 21 - Suppose that a male with a beak depth of 10 mm...Ch. 21 - Prob. 1IQCh. 21 - Prob. 2IQCh. 21 - Prob. 3IQCh. 21 - Why might the evolutionary line leading to...Ch. 21 - Artificial selection is different from natural...Ch. 21 - Gaps in the fossil record a. demonstrate our...Ch. 21 - The evolution of modern horses (Equus) is best...Ch. 21 - Homologous structures a. are structures in two or...Ch. 21 - Convergent evolution a. is an example of...Ch. 21 - Prob. 6UCh. 21 - The possession of fine fur in 5-month human...Ch. 21 - In Darwins finches, a. occurrence of wet and dry...Ch. 21 - Prob. 2ACh. 21 - Convergent evolution is often seen among species...Ch. 21 - What conditions are necessary for evolution by...Ch. 21 - Explain how data shown in figure 21.2a and b...Ch. 21 - Prob. 3SCh. 21 - Refer to figure 21.5, artificial selection in the...Ch. 21 - The ancestor of horses was a small, many-toed...
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- You are studying a species of beetle known as a Flumbodoodle Beetle. The beetle has long spikes on its shell to defend itself from potential predators. You are interested in studying evolution in this beetle. Which of the following studies do you not need to conduct to determine if the long spike trait can evolve by natural selection. a. A study that determines whether beetles with longer spikes survive and reproduce better than beetles with shorter spikes. b. A study that measures the spike length variation across multiple individuals in a population. c. A study where you measure the spike length on the parents and a study where you measure the spike length on the offspring. d. A study that determines whether these spikes on the beetle are also used in mate choice contexts.arrow_forwardNatural selection and artificial selection or selective breeding can both cause changes in animals and plants. The difference between the two is that natural selection happens naturally, but selective breeding only occurs when humans intervene. Changes in genetic traits have occurred over generations through both natural selection and selective breeding although the occur through different means. What characterizes only artificial selection? Choose all that apply. A) chickens that lay larger eggs are favored B) selection increases the chances of surviving C) selection make a species stronger and fit for survival D) selection favors the desired characters in the new organismsarrow_forwardA. Genetic drift refers to a. change in the way the body functions as a result of stressors. b. changes in the DNA sequence, particularly in sex cells. c. random changes or accidents that reduce genetic variation in a population. B. All human cultures a. can be correlated with "races" in the past. b. are unchanging and eternal. c. can be ranked as "primitive" or "advanced". d. are integrated and complex. d. exchange of genes when outsiders migrate into an area.arrow_forward
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