Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Chapter 20.1, Problem 3C
Summary Introduction
To determine: Whether a population following concept of biological species will also follow morphological species concept.
Introduction: In the ancient times, various plants and animals were defined by their external features like morphology and structure. However, the introduction of the concept of biological species concept by Ernst Mayer provided the base for universal classification of organism into specific species. The morphological concept of species is based on simple morphology and sometimes in special cases helps to classify organisms left out by biological species concept.
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Chapter 20 Solutions
Biology (MindTap Course List)
Ch. 20.1 - Describe the biological species concept and list...Ch. 20.1 - Prob. 1CCh. 20.1 - Prob. 2CCh. 20.1 - Prob. 3CCh. 20.2 - Explain the significance of reproductive isolating...Ch. 20.2 - What barriers prevent wood frogs and leopard frogs...Ch. 20.2 - How is temporal isolation different from...Ch. 20.2 - Prob. 3CCh. 20.2 - Of which postzygotic barrier is the mule an...Ch. 20.3 - Prob. 3LO
Ch. 20.3 - Explain the mechanisms of sympatric speciation and...Ch. 20.3 - What are five geographic barriers that might lead...Ch. 20.3 - Prob. 2CCh. 20.3 - Prob. 3CCh. 20.4 - Prob. 5LOCh. 20.4 - Prob. 1CCh. 20.5 - Define macroevolution.Ch. 20.5 - Discuss macroevolution in the context of novel...Ch. 20.5 - Prob. 8LOCh. 20.5 - Why are evolutionary novelties important to...Ch. 20.5 - Prob. 2CCh. 20.5 - Prob. 3CCh. 20.5 - What is the relationship between mass extinction...Ch. 20 - A prezygotic barrier prevents (a) the union of egg...Ch. 20 - The reproductive isolating mechanism in which two...Ch. 20 - Interspecific hybrids, if they survive, are (a)...Ch. 20 - The first step leading to allopatric speciation is...Ch. 20 - The pupfishes in the Death Valley region are an...Ch. 20 - Which of the following evolutionary processes is...Ch. 20 - According to the punctuated equilibrium model, (a)...Ch. 20 - The evolutionary conversion of reptilian scales...Ch. 20 - Adaptive radiation is common following a period of...Ch. 20 - The Hawaiian silverswords are an excellent example...Ch. 20 - VISUALIZE Use two different colors to depict the...Ch. 20 - Prob. 12TYUCh. 20 - EVOLUTION LINK Could hawthorn and apple maggot...Ch. 20 - Prob. 14TYUCh. 20 - EVOLUTION LINK Examine Figure 20-2c and predict...
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- The biological species concept defines a species by its morphology. In other words all members of the same species look alike? True or false?arrow_forwardWhat is a species, according to the biological species concept? Using at least 3 examples, please explain why this definition is not always practical for all species.arrow_forwardA study of two populations of similar organisms determined that the two populations were different species using the phylogenetic species concept. Is it possible for the two populations to also be defined as two different species using the biological species concept? Explain your answer.arrow_forward
- Consider the graphic that is presented and depicts the end-point for the following scenario. At some point in the past, species A resided as a large population entirely within a rectangular geographical area. The population became divided into two isolated populations when, during a major earthquake, a mountain range arose and disrupted gene flow. Over time, the two new populations evolved independently from one another, yielding species B and C. The population comprising species C became divided into two isolated populations when another earthquake created an escarpment that disrupted gene flow. Over time, these two new populations evolved independently from one another, yielding species D and E.Imagine that you were to arrive to the region long after species D and E had evolved, completely oblivious to the scenario that is described above; survey the region for living species in this group; and conduct a cladistic analysis on those species. Assuming that the data that you were to…arrow_forwardIf a geographic barrier is removed and the two reunited populations intermingle and breed, what attributes must the offspring have in order for the two populations, according to the biological species concept, to be considered still the same species?arrow_forwardDiscuss the advantages and limitations of the morphological species concept in defining species.arrow_forward
- Explain your answer in some depth and avoid just saying "It is A" or It is B. Defend your answer and explain why you choice that answer choice. Question: Which would be an example of two populations considered separate species based on the lineage species concept? Group of answer choices A) Two squirrel populations in which one was red and the other was brown B) Two warbler populations in which the females strongly prefer to mate with males of the same population C) Two plant populations that are capable of producing fertile hybrids D) Two dragonfly populations that have accumulated several differences in their DNA sequences Question: Which mechanism can lead to selection against hybridization? Group of answer choices A) Hybrid sterility B) Mechanical isolation C) Gametic isolation D) Temporal isolation E) Behavioral isolation Which of the following results from the uneven heating of land masses and creates winds that blow from low to high elevation? Group…arrow_forwardSimpson’s Diversity Index results in a number between 0 and 1. To get a feel for how this equation works, calculate the minimum diversity – a system in which all organisms are the same species. Scenario: There are 20 people in a classroom (we’ll assume there are no spiders hanging out in the corner).arrow_forwardn which situation would it make sense to use the morphological species concept? When you are able to collect data about how individuals in your study use their habitat, but you are unable to determine if they interbreed When working with fossils from extinct organisms When you only have genetic data about each organism in your study When you are not able to collect data about how individuals in your study use their habitat, but you are able to collect reproductive dataarrow_forward
- The biological species concept primarily focuses on which of the following criteria for defining a species? Interbreeding and reproductive isolation Phylogenetic relationships Ecological roles Morphological similaritiesarrow_forwardThe genetic diversity of the moss Polytrichum commune was analysed in two peat bog ecosystems. Scientists measured genetic diversity by studying three gene loci. For each gene locus, they calculated the proportion of heterozygotes in each population. These values were used as a measure of genetic diversity. The scientists sampled 72 individuals from Population A and 48 individuals from Population B. The results of the genetic analysis are shown in Table 4.2. Population A Population B Locus 1 65 42 Number of heterozygous individuals Locus 2 69 41 Explain your conclusion and show your working. Table 4.2 Locus 3 60 40 Using the data in Table 4.2, suggest which of the two populations of P. commune has the greater genetic diversity.arrow_forwardExplain your answer in some depth and avoid just saying "It is A" or It is B. Defend your answer and explain why you choice that answer choice. Question: Which would be an example of two populations considered separate species based on the lineage species concept? Group of answer choices A) Two squirrel populations in which one was red and the other was brown B) Two warbler populations in which the females strongly prefer to mate with males of the same population C) Two plant populations that are capable of producing fertile hybrids D) Two dragonfly populations that have accumulated several differences in their DNA sequences Question: If a mountain range has forest on the western slope and desert on the eastern slope, what is the direction of the prevailing winds? A) East to west B) South to north C) North to south D) West to east (Is this correct? Why?)arrow_forward
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