Biology: Life on Earth (11th Edition)
11th Edition
ISBN: 9780134256283
Author: Audesirk
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 17, Problem 2FTB
Fill in the following with the appropriate isolating mechanism: Occurs when members of two populations have different courtship behaviors: __________ occurs when hybrid offspring fail to survive to reproduce: ________; occurs when members of two populations have different breeding seasons: ________; occurs when sperm from one species fails to fertilize the eggs of another species: __________; occurs when the sexual organs of two species are incompatible: _________________.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
The graph below includes information on the average time to fixation of an allele (in generations) as a function of population size. The three different curves represent different starting allele frequencies.
Which of the following statements correctly describes patterns depicted in the graph below?
I. As population size increases, it takes fewer generations for alleles to reach fixation
II. As starting allele frequency increases, it takes fewer generations for alleles to reach fixation
III. Small populations will lose alleles more rapidly than large populations.
IV. Even if starting allele frequency is low, fixation is possible - it just happens slowly.
Only III is a correct description
Only II is a correct description
II, III, & IV are correct descriptions
Both II & III are correct descriptions
Both I & II are correct descriptions
All four statements (I, II, III & IV) are correct descriptions
asap please
Which of the following species would have the greatest chance of going extinct?
a species with a slow reproduction rate and very little genetic variation living in a changing environment
a species with a fast reproduction rate and lots of genetic variation living in a changing environment
a species with a slow reproduction rate and very little genetic variation living in a stable environment
a species with a fast reproduction rate and lots of genetic variation living in a stable environment
Classify the following scenarios with the appropriate term regarding different types of reproductive barriers.
a. One species of owl is diurnal (active in daylight) and another is nocturnal (active at night)________________________
b.The blue footed booby will only mate after a male displays their bright blue feet_________________________
c. The hybrid offspring of a horse and donnkey is sterile___________________________________
2. Use the diagram to the right to answer the following questions.
c.Which letter (A, B, or C) represents the original population of fish?
b.Which letter represents allopatric speciation? Explain your answer.
c.Which letter represents sympatric speciation? Explain your answer.
Chapter 17 Solutions
Biology: Life on Earth (11th Edition)
Ch. 17 - The biological species concept is difficult or...Ch. 17 - 2. Which of the following does not describe a...Ch. 17 - 3. All instances of speciation require
a. genetic...Ch. 17 - Analysis of Rhagoletis fly populations in North...Ch. 17 - In the initial phase of allopatric speciation,...Ch. 17 - 1. A species is a group of _________ that evolves...Ch. 17 - 2. Fill in the following with the appropriate...Ch. 17 - 3. Formation of a new species occurs when two...Ch. 17 - Prob. 4FTBCh. 17 - Prob. 5FTB
Ch. 17 - Define the following terms: species, speciation,...Ch. 17 - Many of the oak tree species in central and...Ch. 17 - Review the material on the possibility of...Ch. 17 - 4. A drug called colchicine prevents cell division...Ch. 17 - What are the two major types of reproductive...Ch. 17 - 1. It is difficult to perform experiments that...
Knowledge Booster
Learn more about
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
- Which of the following would count as evidence that two populations are different species, according to the biological species concept?.arrow_forwardIdentify which of the following are examples of temporal isolation. Two species have different courtship displays. Two species are sexually active at different times of the day. Two species have different habitat ranges. Two species mate at different times of the year, one in early spring and one during the summer. Two species of wild lettuce grow in the same area, but one flowers in early spring and the other flowers in summer. Two species of birds live in the same area and mate at the same time, but have different songs.arrow_forwardWhich of the following is NOT an example of an r-selected population? Select one: a. Mosquito lifespan is between 42 and 56 days for females and 10 days for males. b. Minnows spawn 16 to 26 times per year, yielding up to 10 000 eggs per female. c. Houseflies are very tolerant of a wide range of environmental conditions and thus have a broad range of habitat. d. Algae are capable of reproducing asexually and sexually to take advantage on the conditions of the environment.arrow_forward
- What is a cline? A. A gradual change in genetic or phenotypic characteristics of a population within a set geographic space. B. A gradual change in genetic or phenotypic characteristics of a population over geographic space. C. Similar genetic or phenotypic characteristics of a population within the same geographic space. D. Discrete changes in genetic or phenotypic characteristics of a population over geographic space.arrow_forwardA difference in survival and reproduction among members of a population that vary in one or more traits is called ________.arrow_forwardThe table below records information on a gene with two alleles, Z and Y, in four different populations. Use this information to answer the following questions. If migration were occurring between populations C and D, what do you predict the frequency of Z ought to be, based on the conditions given in the table? Population Frequency of allele Z Population size Fitness of ZZ Fitness of ZY Fitness of YY A 1.0 200 0.84 0.84 1.0 B 0 320,000 0.84 0.84 1.0 C 0.93 130,000 0.84 0.84 1.0 D 0.99 1,450,000 1.0 1.0 0.62 If migration were occurring between populations C and D, what do you predict the frequency of Z ought to be, based on the conditions given in the table? Group of answer choices A.) 0 B.) greater than 0 C.) 1.0 D.) randomarrow_forward
- Based on the biological species concept, which of the following would lead biologists to conclude that different populations of lizards were actually a single species rather than two different species? A.) lizards from the two different populations mate rarely, and produce hyrbid offspring that are sterile B.) Lizards from the two differnt populations mate during different seasons C.) Lizards from the two different populations mate regularly and produce sterile offspring D.) Lizards from the two different populations matre regularly and produce viable offspring capable of reprodarrow_forwardNew Zealand snapper populations were found to be under the influence of genetic drift, suggesting overfishing was still an issue for them, despite the New Zealand fisheries estimating their total population size to be over 3 million. Which of the following is the best explanation for this observation? A) Pelagic fish, like the New Zealand snapper, often only have a few reproductive individuals, therefore their effective population size is actually much smaller than the total population size. B) Pelagic fish, like the New Zealand snapper, often have an equal sex ratio which affects the number of breeding individuals. C) Pelagic fish, like the New Zealand snapper, often have disassortative mating which affects the number of breeding individuals. D) Pelagic fish, like the New Zealand snapper, often have assortative mating which affects the number of breeding individuals.arrow_forwardImagine three islands, each with a population of frogs. There are approximately 1,100 frogs on Island 1, 400 on Island 2, and 400 on Island 3. Researchers estimate that these populations have been separated for 800 years. Individuals in these populations show variation in markings on their body by shape and color. Frogs on Islands 1 and 2 have circle markings that are either red, blue, or purple. All frogs on Island 3 have yellow triangle markings. The islands recently became a tourist destination, with new passenger boats connecting Island 1 and Island 2, and Island 1 and Island 3 (there is no boat that goes between Island 2 and Island 3). Would a biologist agree or disagree with the following statements? part 1: It is possible that yellow or triangle markings exists on Island 1 at some point in the past. Question options: Agree Disagree part 2: Genetic drift is not occurring on Island 1. Question options:…arrow_forward
- Imagine three islands, each with a population of frogs. There are approximately 1,100 frogs on Island 1, 400 on Island 2, and 400 on Island 3. Researchers estimate that these populations have been separated for 800 years. Individuals in these populations show variation in markings on their body by shape and color. Frogs on Islands 1 and 2 have circle markings that are either red, blue, or purple. All frogs on Island 3 have yellow triangle markings. The islands recently became a tourist destination, with new passenger boats connecting Island 1 and Island 2, and Island 1 and Island 3 (there is no boat that goes between Island 2 and Island 3). Would a biologist agree or disagree with the following statements? part 1 The current boat routes will decrease the likelihood of a speciation event occurring between the frog populations on Islands 2 and 3 in the future. Question options: Agree Disagree part 2 The observation that…arrow_forwardImagine three islands, each with a population of frogs. There are approximately 1,100 frogs on Island 1, 400 on Island 2, and 400 on Island 3. Researchers estimate that these populations have been separated for 800 years. Individuals in these populations show variation in markings on their body by shape and color. Frogs on Islands 1 and 2 have circle markings that are either red, blue, or purple. All frogs on Island 3 have yellow triangle markings. The islands recently became a tourist destination, with new passenger boats connecting Island 1 and Island 2, and Island 1 and Island 3 (there is no boat that goes between Island 2 and Island 3). part 1:If frogs from Island 1 migrate to Island 3 but are unable to reproduce with the frogs on Island 3, then these populations would be classified as different species according to the Biological Species concept. agree or disagree part2: If frogs are able to sneak onto boats and move between the islands via the current routes, then gene flow…arrow_forwardThe northern hairy-nosed wombat has experienced historical population declines, though population have stabilized recently due to conservation efforts. While studying them researchers noticed the following fluctuations in (effective) population size: Year 1: 100 individuals Year 2: 90 individuals Year 3: 50 individuals Year 4: 75 individuals Year 5: 90 individuals Year 6: 95 individuals A. Given this information what is the long-term effective population size of this particular population over the six years? B. Assume that at the start of the study the researchers determined heterozygosity for this population to be 0.63 at microsatellite loci. What would you expect the heterozygosity to be at the end of the six years? (Answer part B)arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning
Human Biology (MindTap Course List)
Biology
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cengage Learning
Mendelian Genetics and Punnett Squares; Author: Professor Dave Explains;https://www.youtube.com/watch?v=3f_eisNPpnc;License: Standard YouTube License, CC-BY
The Evolution of Populations: Natural Selection, Genetic Drift, and Gene Flow; Author: Professor Dave Explains;https://www.youtube.com/watch?v=SRWXEMlI0_U;License: Standard YouTube License, CC-BY