EP CAMPBELL BIO.IN FOCUS AP-MOD.MASTER.
3rd Edition
ISBN: 9780137453092
Author: Urry
Publisher: SAVVAS L
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 21, Problem 9TYU
SYNTHESIZE YOUR KNOWLEDGE
This kettle lake formed 14,000 years ago when a glacier that covered the surrounding area melted. Initially devoid of animal life, over time the lake was colonized by invertebrates and other animals. Hypothesize how mutation, natural selection, genetic drift, and gene flow may have affected populations that colonized the lake.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Suppose that global warming causes ocean rise that obliterates most of the Gulf Coast of Florida and much of its human population, and that radiation leaking from the destroyed Big Bend Nuclear Power Station causes a mutation that yields green hair in humans with the homozygous recessive mutant allele. Many years pass and a new island appears in the Gulf. This island is then colonized by an intrepid human population that is fixed for the recessive green hair allele.
If the island population grows to 10,000 individuals and then a new mutation arises once in the population, with a single individual becoming heterozygous for the green hair locus,
a) What is the probability that this non-green hair allele will reach fixation by genetic drift? (Assume no selection or additional mutation at this locus).
b) What is the average time to fixation of this new non-green allele?
Suppose that global warming causes ocean rise that obliterates most of the Gulf Coast of Florida and much of its human population, and that radiation leaking from the destroyed Big Bend Nuclear Power Station causes a mutation that yields green hair in humans with the homozygous recessive mutant allele. Many years pass and a new island appears in the Gulf. This island is then colonized by an intrepid human population that is fixed for the recessive green hair allele.
If the island population grows to 10,000 individuals and then an individual who is heterozygous for the green hair locus arrives on the island and mates with one of the residents, how many generations will it take for the dominant, non-green hair allele to reach a frequency of 99%? (Assume viability selection 20% in favour of the non-green allele and ignore the effects of genetic drift).
In the early nineteenth century, the French scientist Georges Cuvier provided conclusive evidence of the
extinction of species on Earth. Although Cuvier correctly asserted that a series of catastrophes led to these
extinctions, he could not provide a testable explanation of the source of the new animals and plants that
appeared after the extinction of older forms. How would you argue that modern evolutionary theory provides
an explanation for the proliferation of new forms of life after mass extinctions?
Chapter 21 Solutions
EP CAMPBELL BIO.IN FOCUS AP-MOD.MASTER.
Ch. 21.1 - Explain why genetic variation within a population...Ch. 21.1 - Of all the mutations that occur in a population,...Ch. 21.1 - Prob. 3CCCh. 21.2 - A population has 700 individuals, 85 of genotype...Ch. 21.2 - The frequency of allele a is 0.45 for a population...Ch. 21.2 - WHAT IF? A locus that affects susceptibility to a...Ch. 21.3 - In what sense is natural selection more...Ch. 21.3 - Distinguish genetic drift from gene flow in terms...Ch. 21.3 - WHAT IF? Suppose two plant populations exchange...Ch. 21.4 - What is the relative fitness of a sterile mule?...
Ch. 21.4 - Explain why natural selection is the only...Ch. 21.4 - Consider a population in which heterozygotes at a...Ch. 21 - Natural selection changes allele frequencies...Ch. 21 - Sparrows With average-sized w1ngs survive severe...Ch. 21 - If the nucleotide variability of a locus equals...Ch. 21 - There are 25 individuals in population 1, all with...Ch. 21 - A fruit fly population has a gene with two...Ch. 21 - FOCUS ON EVOLUTION Using at least TWO examples,...Ch. 21 - Prob. 8TYUCh. 21 - SYNTHESIZE YOUR KNOWLEDGE This kettle lake formed...
Additional Science Textbook Solutions
Find more solutions based on key concepts
Why is it necessary to be in a pressurized cabin when flying at 30,000 feet?
Anatomy & Physiology (6th Edition)
Why are mutants used as test organisms in the Ames test?
Laboratory Experiments in Microbiology (12th Edition) (What's New in Microbiology)
a. What three lineages of lobe-fins survive today? b. Go back to the phylogenetic tree in Interactive Question ...
Study Guide for Campbell Biology
How does trandlation differ from transcription?
Microbiology: Principles and Explorations
Some people consider Pasteur or Koch to be the Father of Microbiology, rather than Leeuwenhoek. Why might they ...
Microbiology with Diseases by Body System (4th Edition)
Identify each of the following reproductive barriers as prezygotic or postzygotic. a. One lilac species lives o...
Campbell Essential Biology with Physiology (5th Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- We have looked at what the fossil record can tell us about the amazing History of Life on Earth. We've examined the evidence for an early origin for life in the sea, 3800 million years, and investigated how life invaded life about 500 million years. We've also discussed the subsequent boom in life that massively increased biodiversity but also noted how the History of Life is frequently punctuated by mass extinctions. Today we stand on the threshold of a new mass extinction event. The biodiversity that we take for granted and that sustains humans is threatened to a degree only rarely seen in 4500 million years of Earth History. NOW TO CONCLUDE, ANSWER THE QUESTION. 1. ARE WE ON THE BRINK OF A MASS EXTINCTION? WHAT WOULD BE THE CONSEQUENCES FOR SOCIETY OF LOSING HALF OF ALL SPECIES BY 2100? ARE THERE ACTIONS THAT WE CAN TAKE AS INDIVIDUALS AND AS SOCIETY TO HELP PROTECT LIFE ON EARTH?arrow_forwardOnce common in Australia, a huge flightless bird called Genyornis newtoni is now extinct. Isotopic dating of its fossilized eggshells indicate that no Genyornis eggs are younger than 50,000 years old. Humans colonized Australia 50,000 years ago. What types of evidence would be needed to support the hypothesis that humans hunted this flightless bird to extinction?arrow_forwardExplain how Jellyfish Lake is evidence for evolution.arrow_forward
- Which of the following is likely a reason why evolutionary radiation would occur on islands? A) there are many more species on islands B) islands tend to have more favourable habitats than continents because they are moderated by the ocean C) islands may have fewer animal and plant groups and thus provide more ecological opportunities D) organisms can disperse easily across oceans E) islands often have more diverse habitats than continentsarrow_forwardAccording to " Denisovans: Decoding the Secrets of Our Mysterious Ancient Cousins”, what is the most likely reason that the Denisovans became extinct? A.Woolly mammoths expanded into the territories that Denisovans lived, and used up the food and land resources in that area. B.Homo sapiens expanded into the territories that Denisovans lived, and used up the food and land resources in that area. C.Homo sapiens expanded into the territories that Denisovans lived, and killed off the Denisovans. D.Predators expanded into the territories that Denisovans lived, and they killed off the Denisovans.arrow_forwardHow does finding the same fossils of a land animal on two different continents support the hypothesis of continental drift? A) The land animal fossil is now found in colder parts of the world which means the continents had drifted since the fossils were made. B) The land animal fossil could only have ended up fossilized on both continents if they were once together C) The land animal fossil was unable to swim across oceans so the fact that its fossils were found on distant continents suggested those continents had once been fused together as later moved apart. D) The land animal fossil wasnt found in Asia which wegner thought was only stable continent that hadn’t moved.arrow_forward
- Applying your knowledge of genetics, natural selection and evolution, how is the positive response to global climate change possible? Is your answer supported by the information from the article “Can Evolution outrace Climate Change”? According to the authors of this article, what are the conditions necessary for an organism to evolve to accommodate climate change?arrow_forwardWhat is the difference between micro- and macroevolution? a. Microevolution describes the evolution of small organisms, such as insects, while macroevolution describes the evolution of large organisms, like people and elephants. b. Microevolution describes the evolution of microscopic entities, such as molecules and proteins, while macroevolution describes the evolution of whole organisms. c. Microevolution describes the evolution of populations, while macroevolution describes the emergence of new species over long periods of time. d. Microevolution describes the evolution of organisms over their lifetimes, while macroevolution describes the evolution of organisms over multiple generations.arrow_forwardWhy was Lyell's concept of uniformitarianism, which proposed that the Earth had been going through gradual geological changes over a much longer period of time than previously believed, important for the development of Darwin's ideas about natural selection? Geological catastrophes can reform the landscape and open new niches into which species can adapt and thrive It provided another argument against the Church's explanation for the creation of Earth It explained how vast mountain ranges could form to separate populations It explained the presence of fossils for species that no longer existed An old Earth provides enough time for the gradual process of evolution to take placearrow_forward
- The Beringia hypothesis has been accepted for many years, but newer DNA evidence from sagebrush, trees, woolly mammoths, bison, rabbits, and other species found in sediments of ancient lakes that once separated the retreating glaciers suggest that the most recent land bridge was actually 12,600 years ago and not 25,000 to 15,000 years ago. How would these new findings alter the explanation for evidence of humans in North America dating to before 12,600 years ago?arrow_forwardClimate change causes problems for organisms that have adapted to their environments. Please list two problems that climate change could cause which would prevent organisms from surviving in an environment to which they are well adapted.arrow_forwardIf a researcher were to only conduct studies of rotifers in homogeneous environments and never in heterogeneous environments, the research may underestimate the benefits of and O polymorphisms; parthenogenesis O heterozygosity; genetic drift gene flow; asexual reproduction O heterozygosity; sexual reproductionarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning
Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College
Human Biology (MindTap Course List)
Biology
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cengage Learning
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
From Sea to Changing Sea | Early Life in the Oceans || Radcliffe Institute; Author: Harvard University;https://www.youtube.com/watch?v=Ac0TmDf5Feo;License: Standard youtube license