Biology: Life on Earth (11th Edition)
11th Edition
ISBN: 9780134168296
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Chapter 17, Problem 1FTB
A species is a group of _________ that evolves ________. The biological species concept identifies species on the basis of their _________ The biological species concept cannot be applied to species that reproduce ___________.
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The number of named species is about______________, butthe actual number of species on Earth is estimated to beabout ______________ or higher.
The process by which many new species arise in a relatively short period of time is known as________ . This process often occurs when a species arrives in a previously unoccupied_______ .
A group of birds colonize an island. Over time, they become different from the mainland source population and reach the point where they can no longer interbreed with one another They are now called _________________ and the process is called ________________speciation.
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Chapter 17 Solutions
Biology: Life on Earth (11th Edition)
Ch. 17 - The biological species concept is difficult or...Ch. 17 - 2. Which of the following does not describe a...Ch. 17 - 3. All instances of speciation require
a. genetic...Ch. 17 - Analysis of Rhagoletis fly populations in North...Ch. 17 - In the initial phase of allopatric speciation,...Ch. 17 - 1. A species is a group of _________ that evolves...Ch. 17 - 2. Fill in the following with the appropriate...Ch. 17 - 3. Formation of a new species occurs when two...Ch. 17 - Prob. 4FTBCh. 17 - Prob. 5FTB
Ch. 17 - Define the following terms: species, speciation,...Ch. 17 - Many of the oak tree species in central and...Ch. 17 - Review the material on the possibility of...Ch. 17 - 4. A drug called colchicine prevents cell division...Ch. 17 - What are the two major types of reproductive...Ch. 17 - 1. It is difficult to perform experiments that...
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- The Abert and the Kaibab species of squirrels live on opposite ends of the Grand Canyon. Physically they are very similar to each other, which leads scientist to think that when the Grand Canyon was shallower (millions of years ago) the populations use to have genetic contact (sexual reproduction). In present day, they are completely isolated from each other. When tested the Abert and Kaibab squirrels cannot produce a fertile offspring. This is an example of ___ speciation. [Fill in the blank]arrow_forwardFormation of a new species occurs when two populations of an existing species first become_______ and then_______ . The process in which geographicseparation of parts of a population leads to the formation of new species is called_______ . Isolated populations may diverge through the action of or________.arrow_forwardWhat criteria are used in the biological species concept to define a species? Choose all that apply.- live in same habitat - have same niche - produce viable offspring - have similar genetics - look similar - produce fertile offspring - have similar ancestryarrow_forward
- The following is a matching question, below is text interepreted.Match each term to the best definition or description. ResiliencySpecies richnessBiodiversityGamma diversity words to match it with: number of species in an environment, considers number of habitats and total species number among them, combination of species richness and species eveness, same as species eveness, high probability of recovery to original state, high probability of disruption.If you do not understand the text based question, use the image below.arrow_forwardWhy are nonnative species often considered a disturbance in an ecosystem? They increase mutations. They compete for resources. They have special growth needs. They cause increased biodiversity.arrow_forwardVertical 11 1. Involves the formation of new species from pre-existing species. 8 3. Group of organisms that are capable of producing viable and fertile offspring 5. A mechanism that keeps species from mating with other. 7. it means "beside" 13 9. offspring of parents that differ in genetically determined traits. 12 11. Incapable of producing offspring 13. In temporal or seasonal isolation the reproduction is prevented by 10 15 14 Horlzontal 2. The role or the organism in the environment 4. It means "Place" 6. _itself is not only the mechanism of change overtime but it reduce the gene flow 8. Prevents the Fertilization of the eggs 10. An isolation wherein there's a differences in reproductive organs prevent successful Interbreeding. 12. It means "near" 14. Prevents the formation of fertile offspring 15. Formation of new species from the hybridization of 2 different speciesarrow_forward
- According to the biological species concept, individuals belong to the same species if all population members ___. Group of answer choices remain in a small geographical area share a recent common ancestor are similar in DNA sequence. resemble one another in phenotype. can interbreed and produce fertile offspringarrow_forwardIn a species of water snake has populations on the mainland and on an island, snakes are regularly washed from the mainland to the island where they become part of the breeding population on the island. For the island population, this violates the assumption of ______________________ because the evolutionary mechanism of________________ is present.arrow_forwardOf all taxonomic categories, only species has an objective definition. What is it?arrow_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_forwardMatch the definitions on the left with the vocabulary words on the right. The level of diversity within a given species The number of different species within a specific region or area The variety of ecosystems in a given region or area the degree to which different species in a given ecosystem, or area, depend on other species in that area for survival ::species interdependence :: ecosystem diversity genetic diversity species diversityarrow_forwardWhich species concept prioritizes information about mating and reproduction over other observations about the species? biological species concept phylogenetic species concept ecological species concept O morphospecies conceptarrow_forward
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