Pearson eText Biology: Life on Earth with Physiology -- Instant Access (Pearson+)
12th Edition
ISBN: 9780135755785
Author: Gerald Audesirk, Teresa Audesirk
Publisher: PEARSON+
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Textbook Question
Chapter 15, Problem 8RQ
In what sense are humans currently acting as agents of selection on other species? Name some traits that are favored by the environmental changes humans cause.
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Natural 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 organisms
What are two reasons why a selection limit is reached in which artificial selection no longer has an effect?
Chapter 15 Solutions
Pearson eText Biology: Life on Earth with Physiology -- Instant Access (Pearson+)
Ch. 15.1 - identify some of the thinkers whose ideas set the...Ch. 15.1 - Prob. 2CYLCh. 15.1 - define evolution?Ch. 15.2 - A recent study found that Galpagos mockingbirds on...Ch. 15.2 - Prob. 2TCCh. 15.2 - explain how natural selection works and how it...Ch. 15.2 - describe the logic, based on four postulates, by...Ch. 15.3 - The fossil history of some kinds of modem...Ch. 15.3 - What Good Are Wisdom Teeth and Ostrich Wings?...Ch. 15.3 - Are a peacocks tail and a dogs tail homologous...
Ch. 15.3 - Between 70% and 85% of people will experience...Ch. 15.3 - describe the evidence that evolution has occurred?Ch. 15.3 - explain the difference between similarity due to...Ch. 15.3 - What Good Are Wisdom Teeth and Ostrich Wings? Just...Ch. 15.4 - To reduce the incidence of pesticide resistance,...Ch. 15.4 - describe some observations and experiments that...Ch. 15.4 - Some advocates of the view that all organisms were...Ch. 15 - Whale skeletons contain nonfunctional pelvic bones...Ch. 15 - Darwin was influenced by Malthuss thinking about...Ch. 15 - Prob. 3MCCh. 15 - Which of the following is not required for...Ch. 15 - Prob. 5MCCh. 15 - The flipper of a seal is homologous with the _____...Ch. 15 - Prob. 2FIBCh. 15 - Georges Cuvier espoused a concept called ______ to...Ch. 15 - Prob. 4FIBCh. 15 - Prob. 5FIBCh. 15 - Darwin's postulate 2 states that ______. The work...Ch. 15 - Prob. 1RQCh. 15 - Distinguish between catastrophism and...Ch. 15 - Describe Lamarcks theory of inheritance of...Ch. 15 - What is natural selection? Describe how natural...Ch. 15 - Describe how evolution occurs. In your...Ch. 15 - What is convergent evolution? Give an example.Ch. 15 - How do biochemistry and molecular genetics...Ch. 15 - In what sense are humans currently acting as...Ch. 15 - In discussions of untapped human potential, It is...Ch. 15 - Does evolution through natural selection produce...
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- Types of Selection Match each situation to the type of selection most likely to occur. NOTE: If you want to change your selection, you'll need to delete the one you already chose. After you delete it, the list of choices will pop back up and you can make a different choice. Rabbits with medium colored fur blend into the background, but very light or very dark fur colors are easier for predators to spot. disruptive selection Drab colored guppies are less likely to be eaten by predators, but brightly colored males are preferred by females. sexual selection Butterflies with small wings can easily find hiding places to escape predators. Butterflies with large wings can fly higher and faster to directional selection stabilizing selection escape predators. A species of rodent is vulnerable to cold weather when small, but able to keep warm when large.arrow_forwardSexual selection tends to cause bigger size,more elaborate weaponry, or brighter colors in males. Is this an example of stabilizing,directional, or disruptive selection?arrow_forwardFor a chamelons ability to color change, what type of selection (directional selection, stabilizing selection, disruptive selection, sexual selection, etc) would this trait be under?arrow_forward
- Becca loves German Shepherds and wants to have one as a pet. She locates a breeder and agrees to purchase one of the puppies. Which type of selection occurs from this type of human intervention? directional selection stabilizing selection disruptive selection artificial selectionarrow_forwardWhat is artificial selection? 1 point When the environment selects the best traits to survive and be passed on to future generations. When females of the species select the best traits to survive and be passed on to future generations. When males of the species select the best traits to survive and be passed on to future generations. When humans select the best traits to survive and be passed on to future generations.arrow_forwardConsider the roles of different types of selective pressure. Part A: Compare and contrast sexual selection, artificial selection, and natural selection. Part B: Give examples of traits that may be favored in sexual selection, artificial selection, and natural selection. For each, explain if the trait would be favored by one type of selection but selected against by another type of selection. BI 1000 MacBook Air O00 F1 F2 F3 F4 F5 F6 F7 F8 $ % & * 2 3 4 6.arrow_forward
- The domestication or breeding of animals to have as pets, livestock on farms, or for work purposes is a form of artificial selection. Charles Darwin used these practices to support his theory of species change by natural selection. How is artificial selection similar to natural selection? When animals with favorable traits are bred with animals with unfavorable traits, the offspring will have favorable traits, so breeders were changing species by removing certain traits. For artificial selection to work, only the strong survive to reproduce. By breeding animals with specific traits, breeders were able to produce a wide variety of breeds within a short period of time. Artificial selection involves breeding two different species and determining if a hybrid organism can be produced.arrow_forwardUnder which of the following scenarios would variation be maintained? Selection acting on a dominant high fitness allele Selection acting on a recessive high fitness allele Selection favoring heterozygotes Selection acting against heterozygotes None of the abovearrow_forwardWhat are the similarities and differences between natural selection and selective breeding?arrow_forward
- In a habitat there are red bugs and green bugs. the birds prefer the taste of red bugs. so soon there are many green bugs and dew red bugs. the green bugs reproduce and make more green bugs and eventually there are no more red bugs. what type of selection is this? give another example of this type of selectionarrow_forwardHow and why have humans changed animals over time through artificial selection? 2. How are cows naturally adapted to their food sources? 3. What do breeders look for in selecting traits for breeding beef cows? What traits do breeders look to modify when improving dairy cow breeds? What are dog’s natural traits that make them attractive to people? What adaptations have sled dogs made to living in the arctic? What traits have people artificially selected sheep dogs for? 8.What are physical and mental problems dog breeds may have? How long did it take or how many generations did it take to domesticate the wild silver fox? What is another example from the videos of a man-made or human-influenced adaptation? 1. Why is it a good thing that humans have artificially selected animals to serve their purposes.arrow_forwardCompare and contrast directional selection and disruptive selection, and provide an example of each.arrow_forward
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