Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 22.3, Problem 1R
Summary Introduction
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The way, in which
Introduction:
Speciation is the process of formation of distinct species through the process of evolution. There are four types of speciation, based on their isolation. They are allopatric, peripatric, parapatric, and sympatric. This can also be done by artificial methods like experiments in the laboratory, agriculture, and others.
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Life: The Science of Biology
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- Define the following terms related to alterations of generations: a.Haploid b.Diploidarrow_forward(d) Scientists believe that the yellow fern arose from hybridization with another fern on the island. Create a diagram of this hybridization that tracks the origin of the chromosome number in the yellow fern.arrow_forwardHow is the process of meiosis responsible for variation among species? What mechanisms are involved in the process of meiosis and in which stage(s) do they take place? HINT: What are two important events that happen in meiosis but not mitosis that contribute to genetic diversity?arrow_forward
- Species A and B are closely related. Species A has 2n = 12 chromosomes, and species B has 2n = 16 chromosomes. How many chromosomes would be found in the somatic cells of an allotetraploid? 56 38 20 28 14arrow_forwardExplain the term is Euploidy?arrow_forwardExplain the Variations of Euploidy?arrow_forward
- Besides the ones mentioned in this textbook, look for other examplesof variations in euploidy. Perhaps you might look in moreadvanced textbooks concerning population genetics, ecology, etc.Discuss the phenotypic consequences of these changes.arrow_forwardWhat is meant by Euploidy?arrow_forwardPlease describe the differences between euploid and aneuploidarrow_forward
- Explain the terms haploid, diploid, and polyploid. Why is polyploidy so much more common in plants than in animals? Give examples of polyploid animals. Polyploid plants may occur naturally or they may be created intentionally by agricultural scientists. List four examples of polyploid commercial crops and explain why they are superior to their diploid ancestors.arrow_forwardExplain Different Kinds of Aneuploidy in a Normally Diploid Organismarrow_forwardSpecies I has 2n = 8 chromosomes and species II has 2n = 14 chromosomes. What would the expected chromosome number be in an individual organism of species I with autotetraploidy? 22 16 21 9 15 O O O Oarrow_forward
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