CAMP.BIO:CONC...MOD.MAST+PRINT>I<
10th Edition
ISBN: 9780136858287
Author: Taylor
Publisher: INTER PEAR
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Chapter 14, Problem 13TYK
Explain how each of the following makes it difficult to clearly define a species: variation within a species, geographically isolated populations, asexual species, fossil organisms.
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Charles Darwin’s claim, that the species level of classification is just as arbitrary as that of any other taxonomic level, is supported by all of the following observational failures except:
the inability of a cloning species lacking biparental reproduction to interbreed with a different species
the inability of an asexual eukaryotic species to interbreed with a different species
the inability of a sexually-reproducing eukaryotic species to interbreed with a different species
the inability of a prokaryotic species to interbreed with a different species
the inability of an extinct species (like a dinosaur) to interbreed with a different species
Charles Darwin’s claim, that the species level of classification is just as arbitrary as that of any other taxonomic level, is supported by all of the following observational failures except:
the inability of a sexually-reproducing eukaryotic species to interbreed with a different species
the inability of a cloning species lacking biparental reproduction to interbreed with a different species
the inability of an asexual eukaryotic species to interbreed with a different species
the inability of an extinct species (like a dinosaur) to interbreed with a different species
the inability of a prokaryotic species to interbreed with a different species.
Please use and cite any source(s) you can find to answer the following questions:1. List and describe the different ways in which species are defined.2. Explain how each of the following makes it difficult to clearly define a species: variation within aspecies, geographically isolated populations, asexual species, fossil organisms.3. List and describe the pre-zygotic barriers as well as the post-zygotic barriers.4. Explain why allopatric speciation would be less likely on an island close to a mainland than on a moreisolated island.
Chapter 14 Solutions
CAMP.BIO:CONC...MOD.MAST+PRINT>I<
Ch. 14 - Name the two types of speciation represented by...Ch. 14 - Fill in the blanks in the following concept map.Ch. 14 - Which concept of species would be most useful to a...Ch. 14 - According to the biological species concept,...Ch. 14 - Bird guides once listed the myrtle warbler and...Ch. 14 - Which of the following is an example of a...Ch. 14 - Biologists have found more than 500 species of...Ch. 14 - A new plant species C, which formed from...Ch. 14 - A horse (2n = 64) and a donkey (2n = 62) can mate...Ch. 14 - What prevents horses and donkeys from hybridizing...
Ch. 14 - When hybrids produced in a hybrid zone can breed...Ch. 14 - Which of the following factors would not...Ch. 14 - Explain how each of the following makes it...Ch. 14 - Explain why allopatric speciation would be less...Ch. 14 - What does the term punctuated equilibria describe?Ch. 14 - Can factors that cause sympatric speciation also...Ch. 14 - Cultivated American cotton plants have a total of...Ch. 14 - Prob. 18TYKCh. 14 - Prob. 19TYK
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- Over time, enough genetic variations can develop within a population to cause it to undergo speciation. Identify the various mechanisms that will prevent different species from being able to reproduce successfully. Which of these mechanisms is the most influential in keeping species sperate?arrow_forwardWhich of the following sets of evidence supports the idea that species share common ancestry? Similar modern species are often found living in the same areas Different species share similarities at the genetic, developmental, and structural level Modern populations can be observed diverging from one another, indicating the start of speciation All of the abovearrow_forwardA species is a group of individual organisms that interbreed and produce fertile, viable offspring. According to this definition, one species is distinguished from another when, in nature, it is not possible for matings between individuals from each species to produce fertile offspring. Evolution is an important mechanism in the formation of new species. The evolution of a new species requires several components including all, BUT A) Evolution of a new species requires a long time. B) Evolution of a new species requires the need for a genetic change. C) Evolution of a new species requires a separation that prevents interbreeding. D) Evolution of a new species requires mutations that produce new genetic traits. not graded use photoarrow_forward
- a) How many of the gene trees do you expect to look like the species tree? b) You observe three gene trees in which species X and Z are the closest relatives and seven gene trees where X and Y are the closest relatives. What can you conclude from these data? Group of answer choices Historical hybridization between species W and X Historical hybridization between species X and Y Historical hybridization between species X and Z Historical hybridization between species Y and Zarrow_forwardIf the phylogenetic species concept (PSC) were used to define species, rather than the biological species concept (BSC), how might that change the estimates of species diversity (numbers of species) on a worldwide basis? True or False: Estimates of species diversity are likely to change if the PSC is used. In particular, one would expect the number of species to increase. This is because individuals from divergent allopatric populations that can potentially interbreed would belong to the same species under the BSC. These same organisms would be classified as members of different species under the PSC.arrow_forwardThe biological species concept is based on the assumption that species are reproductively isolated and do not share genes. And yet a number of organisms that are considered different species hybridize (mate and exchange genes). Hybridization between different species is more common in plants than in animals. Propose some possible reasons for this difference.arrow_forward
- Describe the present day theory of evolution. Describe the 4 basic causes of evolution: natural selection, mutation, genetic drift, and gene flow. Describe how each evolutionary force can influence the allele frequencies of a population. Describe sources of evidence for evolution. Identify common misconceptions about evolution. Identify common criticisms of evolution. Describe the evolution of COVID-19.arrow_forwardDescribe how pre-zygotic, post-mating and post-zygotic isolation mechanism lead to variation and eventual speciation.arrow_forwardWhich species concept defines a species as a group of individuals that can reproduce and produce fertile offspring? Morphological species concept Darwinian species concept Phylogenetic species concept Biological species conceptarrow_forward
- Vertical 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_forwardAmong the ingroup species A-D, species A shares the largest number of derived traits with species C. What term best describes species C relative to species A? options: ancestor homologous species outgroup sister speciesarrow_forwardIndicate the order in which the following steps would take place to result in Allopatric Speciation [enter 1 for the first step, 2 for the second, etc; write only the number -- no words, no spaces] The two groups develop reproductive isolating mechanisms so that they no longer interbreed. Interbreeding populations connected via gene flow occur across a range. The two separate groups adapt to their new environments. Some sort of physical barrier develops to split the once contiguous population(s) into two separate groups If they come back together, any hybrids formed are less fit.arrow_forward
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