Biological Science
5th Edition
ISBN: 9780321743671
Author: Scott Freeman
Publisher: PEARSON
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Chapter 26, Problem 5TYK
Summary Introduction
To review:
Justify whether the statement “the average fitness of a population can either increase or decrease due to gene flow” is true or false.
Introduction:
Gene flow or gene migration is caused due to the immigration or emigration of an individual to a new habitat or to a new environmental location and causing an alteration in the allele frequency. It is a mechanism of genetic diversity transfer among the population, which changes the distribution of the alleles and thus disturb the genetic equilibrium of any area.
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Chapter 26 Solutions
Biological Science
Ch. 26 - PROCESS OF SCIENCE In what sense is the...Ch. 26 - 2. Why isn’t inbreeding considered an evolutionary...Ch. 26 - 3. CAUTION Why is genetic drift aptly named?
a. It...Ch. 26 - Prob. 5TYKCh. 26 - 5. QUANTITATIVE In a population of 2500, how many...Ch. 26 - 7. CAUTION Determine what is incorrect in the...Ch. 26 - Prob. 12TYUCh. 26 - QUANTITATIVE In humans, albinism is caused by...Ch. 26 - What does it mean when an allele reaches fixation?...Ch. 26 - Prob. 6TYK
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- True or false? The biological species concept distinguishes two species based on the degree of genetic exchange between their gene poolsarrow_forwardTrue or False If a population is in H-W equilibrium, then all the alleles in the population have the same frequencies.arrow_forwardA difference in survival and reproduction among members of a population that vary in one or more traits is called ________.arrow_forward
- True or False: When observing a gene pool of a community or population using the Hardy-Weinberg Principle, it can be deduced that the allele frequencies are equal.arrow_forwardDescribe a situation in which a population would undergo the bottleneck effect and explain what impact that would have on the population’s gene pool.arrow_forwardBrown fur helps unicorns blend into their environment better than white fur. Therefore, brown furred unicorns are more likely to survive predators and hunters compared to white furred unicorns. If fur colour is a heritable trait, how would the population change over time? Describe how the proportion of individuals with brown versus white fur would change over time, if at all. What process is occurring in the population?arrow_forward
- Random chance has the greatest impact on the result of allelic frequencies when populations are: infinitely large. very small. shrinking. growing.arrow_forwardThe frequency of a recessive allele in a population is 40%. What variable in the Hardy Weinberg equations does the 40% refer to? Why?arrow_forwardTrue or false? Humans are among the most genetically similar species in the world.arrow_forward
- What does Hardy-Weinberg test? The robustness of a population Whether a population is evolving How many alleles are in the gene pool The proportion of fitness in the populationarrow_forwardWhat effect does such a bottleneck have on the future population? Give a brief description of its effect on the size, ability to reproduce, and genetic diversity.arrow_forwardIn garden pea plants, round seeds (R) are dominant to wrinkled seeds (r). In an ideal pea plant population exhibiting Hardy–Weinberg equilibrium, 35 pea plants out of 100 have wrinkled seeds. Calculate the frequency of homozygous round pea plants in the population. Express your answer using two significant digits. Answerarrow_forward
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