Concepts of Biology
1st Edition
ISBN: 9781938168116
Author: Samantha Fowler, Rebecca Roush, James Wise
Publisher: OpenStax College
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Textbook Question
Chapter 11, Problem 10RQ
Which situation would most likely lead to allopatric
a. A flood causes the formation of a new lake.
b. A storm causes several large trees to fall down.
c. A mutation causes a new trait to develop.
d. An injury causes an organism to seek out a new food source.
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Some species undergo polyploidy, which is a multiplication of their chromosomes. That is, they contain full chromosomes from each parent. How could speciation affect a polyploid organism?
A.
The polyploid organisms may experience gametic isolation.
B.
The polyploid organisms may experience behavioral isolation.
C.
The polyploid organisms may experience geographic isolation.
D.
The polyploid organisms would not be affected by speciation.
Which condition is the basis for a species to be reproductively isolated from other members? a. It does not share its habitat with related species. b. It does not exist out of a single habitat. c. It does not exchange genetic information with other species. d. It does not undergo evolutionary changes for a significant period of time.
Which assumption of cladistics is stated incorrectly?a. Living things are related by descent from a common ancestor.b. Speciation can produce one, two, or three new species.c. Traits change from one state to another.d. The polarity of a character state change can be determined.
Chapter 11 Solutions
Concepts of Biology
Ch. 11 - Figure 11.7 Do you think genetic drift would...Ch. 11 - Which scientific concept did Charles Darwin and...Ch. 11 - Which of the following situations will lead to...Ch. 11 - What is the difference between micro- and...Ch. 11 - Population genetics is the study of ________. a....Ch. 11 - Galapagos medium ground finches are found on Santa...Ch. 11 - In which of the following pairs do both...Ch. 11 - The wing of a bird and the arm of a human are...Ch. 11 - The fact that DNA sequences are more similar in...Ch. 11 - Which situation would most likely lead to...
Ch. 11 - What is the main difference between dispersal and...Ch. 11 - Which variable increases the likelihood of...Ch. 11 - The word “theory” in theory of evolution is best...Ch. 11 - Why are alternative scientific theories to...Ch. 11 - If a person scatters a handful of plant seeds from...Ch. 11 - Explain the Hardy-Weinberg principle of...Ch. 11 - Describe natural selection and give an example of...Ch. 11 - Why do scientists consider vestigial structures...Ch. 11 - Why do island chains provide ideal conditions for...Ch. 11 - Two species of fish had recently undergone...Ch. 11 - How does the scientific meaning of “theory” differ...Ch. 11 - Explain why the statement that a monkey is more...
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- Which best describes a branch point in a phylogenetic tree? a. a hypothesis b. new lineage c. hybridization d. a matingarrow_forwardWhat is required for sympatric speciation to occur? A. Continuous gene flow between different populations B. Geographic separation of populations C. Two populations that are different begin to reproduce and create hybrids D. Emergence of a reproductive barrierarrow_forwardWhy is reproductive isolation insufficient to define a species? A. Reproductive isolation doesn't take outgroups into account. B. This definition overlooks artificial reproduction, such as in zoos. C. This definition excludes organisms that reproduce asexually. D. Reproductive isolation can be accomplished in a variety of ways.arrow_forward
- Which variable increases the likelihood of allopatric speciation taking place more quickly? a. lower rate of mutation b. longer distance between divided groups c. increased instances of hybrid formation d. equivalent numbers of individuals in each populationarrow_forwardBoth octopuses and cuttlefish have a single-lens eye. Their common ancestor also had a single-lens eye. What word describes the relationship between the octopus eye and the cuttlefish eye? a. homologous c. analogous b. vestigial d. convergentarrow_forwardThe three beetle species live in the same ecosystem, and they likely evolved from the ancestral species that colonized the region. Which statement best explains how descent with modification influenced speciation in these beetles? A. The ancestral species carried neutral gene mutations that spontaneously caused speciation when they colonized the region. B. The ancestral species randomly diverged into three species before colonization and then colonized the regions that best suited their new adaptations. C. After colonization, small groups separated from the rest of the ancestral species and developed different adaptations that helped them survive and reproduce. D. After colonization, the large group interbred until they developed enough neutral genetic mutations for speciation to occur.arrow_forward
- What pattern of speciation is illustrated by the development of the allopolyploid species? A. allopatric speciation B. sympatric speciation C. cladopatric speciation D. anapatric speciationarrow_forwardwhich statement serves as evidence that Darwin’s theory of evolution had prediction power? a. It could be proven incorrect with the discovery of fossils of complex organisms found in the oldest fossil deposits. b. It could be proven incorrect with the discovery of amphibians and large land mammals on remote oceanic islands. c. It could be used to describe the evolution of large-billed finches on the Galapagos Islands. d. It could be used to hypothesize that fossils of the most primitive human ancestors would be found on the African continent.arrow_forwardWhich process in a hybrid zone increases the likelihood of speciation? A. stability – when a hybrid zone remains the same B. reinforcement – when a hybrid zone widens and fewer hybrids are formed C. convergence – when a hybrid zone narrows and more hybrids are formed D. fusion – when a hybrid zone disappears and separate species fuse into onearrow_forward
- What does “descent with modification” mean?a. Populations that change quickly are likely to become extinct.b. Inherited traits change from generation to generation.c. Tracing an evolutionary tree from top to bottom reveals changes inspecies diversity.d. Parents change their own features before passing them on to offspring.arrow_forwardHow are species defined by the biological species concept? A. Populations of different species are not in the same small monophyletic group B. Individuals of different species cannot produce successful offspring C. Individuals of different species avoid inbreeding D. Individuals of different species have dissimilar morphologies O E. Individuals of different species hybridize and produce offspring that have high fitnessarrow_forwardWhich type of characteristic would be MOST helpful in constructing a phylogenetic tree? a. A characteristic found in none of the selected organisms b. A characteristic found in one of the selected organisms c. A characteristic found in 2-5 of the selected organisms d. A chracteristic found in all of the selected organismsarrow_forward
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