Concept explainers
One characteristic that distinguishes a population in an extinction vortex from most other populations is that
- A. it is a rare, top-level predator.
- B. its effective
population size is much lower than its total population size. - C. its genetic diversity is very low.
- D. it is not well adapted to edge conditions.
Introduction:
In a given population extinction vortex can be defined as the major reduction in the size of a population of a species. Genetic diversity and genetic variation of a population disappears when extinction vortex is formed in a population of a species. Genetic drift and inbreeding can lead to the genetic vortex of a population.
Answer to Problem 1TYU
Correct answer:
Decreasing genetic diversity of a population is a characteristic that can distinguishes a population in an extinction vortex from most other populations. Therefore, option (C) is correct.
Explanation of Solution
Reason for the correct statement:
The decreased genetic variation decreases the survival fitness in the population. It is due to the accumulation of harmful traits and pathogens. Apart from disappeared genetic diversity and demographic; low genetic diversity can also lead for the extinction vortex of a population. The genetic diversity of a population in an extinction vortex is very low from most of other populations.
Option (C) is given as “Its genetic diversity is very low”.
“One characteristic that distinguishes a population in an extinction vortex from most other population is that its genetic diversity is very low” it is the right answer.
Hence, option (C) is correct.
Reason for the incorrect statements:
Option (A) is given as “it is a rare, top-level predator”.
A rare, top-level predator can consume and it can contain a large domain of prey. A population of an extinctive vortex is not a characteristic of a rare, top-level predator. So, it is a wrong answer.
Option (B) is given as “its effective population size is much lower than its total population size”
As the size of effective population is much lower than its total population size, thus it is not a characteristic of extinctive vortex because the effective population must be smaller from other population size. So, it is a wrong answer.
Option (D) is given as “it is not well adapted to edge conditions”.
This population is not well adapted to edge conditions. This is not a characteristic that is particularly related to a population in an extinction vortex. So, it is a wrong answer.
Hence, options (A), (B), and (D) are incorrect.
One characteristic that distinguishes a population in an extinction vortex from most other population is that its genetic diversity is very low.
Want to see more full solutions like this?
Chapter 43 Solutions
Campbell Biology in Focus (2nd Edition)
- What are Clathrin coated vesicles and what is their function?arrow_forwardHow is a protein destined for the Endoplasmic Reticulum (ER), imported into the ER? Be concise.arrow_forwardFind out about the organisations and the movements aimed at the conservation of our natural resources. Eg Chipko movement and Greenpeace. Make a project report on such an organisation.arrow_forward
- What are biofertilizers and mention the significancearrow_forwardPCBs and River Otters: Otters in Washington State’s Green-Duwamish River have high levels of polychlorinated biphenyls (PCBs) in their livers. PCBs can bind to the estrogen receptors in animals and disrupt the endocrine system of these otters. The PCBs seem to increase the estrogen to androgen ratio, skewing the ratio toward too much estrogen. How would increased estrogen affect the river otter population? Based on your reading of the materials in this unit, what factors can affect fertility in humans? Explain how each of the factors affecting human fertility that you described can disrupt the human endocrine system to affect reproduction.arrow_forwardOther than oil and alcohol, are there other liquids you could compare to water (that are liquid at room temperature)? How is water unique compared to these other liquids? What follow-up experiment would you like to do, and how would you relate it to your life?arrow_forward
- Selection of Traits What adaptations do scavengers have for locating and feeding on prey? What adaptations do predators have for capturing and consuming prey?arrow_forwardCompetition Between Species What natural processes limit populations from growing too large? What are some resources organisms can compete over in their natural habitat?arrow_forwardSpecies Interactions Explain how predators, prey and scavengers interact. Explain whether predators and scavengers are necessary or beneficial for an ecosystem.arrow_forward
- magine that you are conducting research on fruit type and seed dispersal. You submitted a paper to a peer-reviewed journal that addresses the factors that impact fruit type and seed dispersal mechanisms in plants of Central America. The editor of the journal communicates that your paper may be published if you make ‘minor revisions’ to the document. Describe two characteristics that you would expect in seeds that are dispersed by the wind. Contrast this with what you would expect for seeds that are gathered, buried or eaten by animals, and explain why they are different. (Editor’s note: Providing this information in your discussion will help readers to consider the significance of the research).arrow_forwardWhat is the difference between Uniporters, Symporters and Antiporters? Which of these are examples of active transport?arrow_forwardWhat are coupled transporters?arrow_forward
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage LearningBiology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage Learning
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax CollegeBiology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage Learning