Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 20.2, Problem 4R
Summary Introduction
To review:
The reason behind slowing down of the evolutionary process due to gene flow.
Introduction:
The gene flow can be defined as the exchange and the movement of the genetic material from one population of the species to another. This flow of gene can take place in between two interbreeding population. It is basically the concept in population genetics, which refers to the flow of genes between the interbreeding population of one species.
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What is gene flow defined as?
Group of answer choices
A-production of new alleles
B-chance loss of alleles in a population
C-exchange of genes between populations
D-production of new genetic material
E-differential reproductive success of individuals
What is genetic drift, gene flow and a population bottle neck
What long-term effects can gene flow have on any two populations that are exchanging genes?
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Life: The Science of Biology
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- The founder effect is a type of (genetic drift / gene flow) in which individuals in one small group of a large population (establish a new distant population / are the only survivors) and then reproduce.arrow_forwardIn which of the following pairs do both evolutionary processes introduce new genetic variation into a population? a. natural selection and genetic drift b. mutation and gene flow c. natural selection and gene flow d. gene flow and genetic driftarrow_forwardExplain gene flow as a force of evolution (how does gene flow contribute to biological change?)arrow_forward
- In the experiment of genetic drift, suppose you have a population of 150 butterflies, but a wildfire devastates the population and only 24 butterflies survive. What percent does the colony decrease by?arrow_forwardHow can a shift in the proportion of genes in a population could lead to the evolution of a new species? Explain why evolution happens to a whole population rather than to a single individual.arrow_forwardHow does population size affect genetic diversity? Cite one example.arrow_forward
- Explain how genetic drift and gene flow affect populationsarrow_forwardWhich of the following is an effect of gene flow? Population size is greatly reduced Individuals establish a new population Natural disasters Genetic differences between populations are reducedarrow_forwardIn genetics, what does the term population mean? Pick any species you like and describe how its population might change over the course of many generations.arrow_forward
- What is Sympatric speciation? A) When a population is separated from the main group by a barrier and becomes a new species B) When a population mutates into a new species C) When a population develops into a new species without any physical barriers to isolate themarrow_forwardWhat does gene flow between population doarrow_forwardWhat is Allopatric speciation? A) When a population is separated from the main group by a barrier and becomes a new species B) When a population mutates into a new species C) When a population develops into a new species without any physical barriers to isolate themarrow_forward
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