Campbell Essential Biology with Physiology (6th Edition)
6th Edition
ISBN: 9780134711751
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece
Publisher: PEARSON
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Chapter 13, Problem 8SQ
Summary Introduction
To explain: How bottleneck effect and founder effect lead to genetic drift.
Introduction: Genetic drift represents the change in the gene pool of a population occurred by chance. The changes in the gene pool occur due to mutation in the genetic material. The variations in the genetic material are the main cause of evolutionary changes occurring in a population. Variation helps a population to gain an advantage over other populations.
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Compare and contrast how the bottleneck effect and the founder effect can lead to genetic drift.
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Campbell Essential Biology with Physiology (6th Edition)
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- What is happening at the bottleneck? Describe the effect of genetic drift during the bottleneck.arrow_forwardThe bottleneck effect and the founder effect are two processes that cause genetic drift to occur. Which was modeled in the second part of this activity? How do you know?arrow_forwardCompare and contrast directional selection and disruptive selection, and provide an example of each.arrow_forward
- What long-term effects can gene flow have on any two populations that are exchanging genes? View keyboard shortcutsarrow_forwardSuppose that a population is at equilibrium between mutation and selection for a deleterious recessive allele, where s = 0.5 and μ = 10−5. What is the equilibrium frequency of the allele? What is the selection cost?arrow_forwardCite instances in the natural setting where the phenomenon of genetic driftarrow_forward
- Explain the difference between Disruptive Selection & Directional Selection ?arrow_forwardWhich of the following is the LEAST CONVINCING argument against micromutationism? Advantageous mutations of large effect are more resistant to loss by drift than advantageous mutations of small effect. Mutations of small effect are more likely to be advantageous than mutations of large effect. Empirical studies suggest that some adaptive traits are governed at least in part by loci of large phenotypic effect.arrow_forwardExplain What is genetic drift? What is a founder? Are these important in large populations or in small ones? How are these phenomena important when we create national parks and preserves to protect endangered species?arrow_forward
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Genetic Variation and Mutation | 9-1 GCSE Science Biology | OCR, AQA, Edexcel; Author: SnapRevise;https://www.youtube.com/watch?v=bLP8udGGfHU;License: Standard YouTube License, CC-BY