Concept explainers
To analyze:
The reason genetic bottleneck can be an important evolutionary factor for a species.
Introduction:
Evolution can be defined as the change in the heritable characteristics of an organism in a species over many generations. Evolution is due to natural selection. The heritable characteristics that change are the characteristics that are passed on from one generation to another. The process of evolution has given rise to the biodiversity at every level of organization of biology or
Explanation of Solution
To a population, a bottleneck effect is a pretty profound impact. For a species, this bottleneck effect can be an important evolutionary event.
Bottleneck is an example of genetic drift. The bottleneck effect occurs when a population declines to a very low number and then rebounds. The rebound population has a gene pool that is very much similar genetically to the population at its lower level, meaning it has reduced diversity.
The bottleneck effect is when there is some initial population. Some individuals from that population survive. So, from a population of high genetic diversity, we go to a lower level where there isa very low number of individuals that survive. And those which do not survive are the ones which have low genetic diversity. If genetic diversity is more then the survival rate of an individual or an organism is more as it can withstand many conditions which a normal individual without any diversity cannot.
Therefore, the bottleneck effect prevents the species from reestablishing its former richness so that the new population evolving has a much-restricted gene pool which is much larger than the ancestor population.
Chapter 15 Solutions
Biology Illinois Edition (Glencoe Science)
Additional Science Textbook Solutions
Fundamentals of Anatomy & Physiology (11th Edition)
Microbiology: An Introduction
Campbell Biology in Focus
Campbell Essential Biology with Physiology (5th Edition)
Campbell Biology: Concepts & Connections (8th Edition)
Campbell Essential Biology with Physiology (6th Edition)
- Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSONBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxAnatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
- Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & CompanyLaboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education