/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 7 How does a founder effect or a p... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 15: Problem 7

How does a founder effect or a population bottleneck amplify the effect of genetic drift?

Short Answer

Expert verified
A founder effect and a population bottleneck magnify the influence of genetic drift by creating a smaller gene pool. Their reduced size makes populations more susceptible to changes in gene frequencies due to random chance, potentially leading to significant genetic differences over time.

Step by step solution

01

Understand The Concepts

Genetic drift refers to random fluctuations in the frequencies of alleles (gene variants) in a population due to chance. These changes can lead to large differences in gene frequencies over time, particularly in small populations. The founder effect occurs when a few individuals from a larger population establish a new population. Due to its small size, this new population is likely to have different gene frequencies from the original population. A population bottleneck is an event that drastically reduces the size of a population, thereby greatly reducing genetic variation.
02

Elaborate on Founder Effect and Genetic Drift

The founder effect amplifies the effect of genetic drift because a few individuals establish a new population, meaning that the gene pool contains only a small fraction of the total genetic variation present in the original population. As a result, genetic drift can more easily fix or eliminate alleles, leading to a shift in gene frequencies and potentially substantial genetic differences.
03

Elaborate on Population Bottleneck and Genetic Drift

A population bottleneck also amplifies the effects of genetic drift. When a population's size is drastically reduced, the survivors constitute a random genetic sample of the original population. Large gene frequency changes can occur, and alleles may be lost, also due to drift engaging more effectively with the smaller gene pool, which can lead to significant genetic changes.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Explain how negative and positive selection can operate on a population at the same time.

Give examples of how each of the following can alter allele frequencies from Hardy-Weinberg equilibrium: a. nonrandom mating b. migration c. a population bottleneck d. mutation

How do genetic drift, nonrandom mating, and natural selection interact?
See all solutions

Recommended explanations on Biology Textbooks

Bioenergetics

Read Explanation

Cell Communication

Read Explanation

Biological Organisms

Read Explanation

Cellular Energetics

Read Explanation

Cells

Read Explanation

Plant Biology

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.