the evolution of new morphological forms genetic drift speciation natural selection gene flow reproductive isolation A factor (such as the separation of continents by continental drift) that reduces groups of organisms promotes on a grand scale. can lead to the fixation of alleles, causing Adaptive evolution by as the high rates of speciation that occur during adaptive radiation. Reset Help at a wide range of loci is a major cause of in many and promoting speciation. as well

the evolution of new morphological forms genetic drift speciation natural selection gene flow reproductive isolation A factor (such as the separation of continents by continental drift) that reduces groups of organisms promotes on a grand scale. can lead to the fixation of alleles, causing Adaptive evolution by as the high rates of speciation that occur during adaptive radiation. Reset Help at a wide range of loci is a major cause of in many and promoting speciation. as well

Biology: The Unity and Diversity of Life (MindTap Course List)

15th Edition

ISBN:9781337408332

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Chapter18: Organizing Information About Species

Section: Chapter Questions

Problem 13SQ: All of the following data types can be used as evidence of shared ancestry except similarities in...

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Sympatric speciation by allotetraploidy has been proposed as acommon mechanism for speciation. Let’s suppose you were interestedin the origin of certain grass species in southern California.Experimentally, how would you go about determining if some ofthe grass species are the result of allotetraploidy?
1. Describe the conditions in order for natural selection to occul. neproduction, heredity, variation in fitness or Organisms, variation Members of the popuiaion.if they are me natural selection automatically Tesults, 2. How does natural selection and evolution lead to speciation? Natural that and may even indy wal characters among organisms 1. Kely to survive and reproduce entually ead t0 speciation- selectio can result in are More Topic 4: Biodiversity Essential Question: Why is biodiversity important and how can it be protected? Vocabulary: Match the following vocabulary words with their definition. 1. Biodiversity 2. Species diversity 3. Genetic diversity 4. Ecosystem diversity 5. Extinction A species dying out b. The variety of life in the world The variety of genetic make ups d. The variety of species in an environment The variation of ecosystems within a biome a. с. e. Questions 1. Why are the world's rainforests so important? 2. Predict solutions for slowing the loss of…
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EVOLUTION CONNECTION The fossil record indicates that therehave been five mass extinction events in the past 500 millionyears (see Concept 25.4). Many ecologists think we are on theverge of entering a sixth mass extinction event. Briefly discussthe history of mass extinctions and the length of time it typicallytakes for species diversity to recover through the process ofevolution. Explain why this should motivate us to slow theloss of biodiversity today.
Recent reconstructions of evolutionary history are often dependenton assigning divergence in terms of changes in amino acid ornucleotide sequences. For example, a comparison of cytochromec shows 10 amino acid differences between humans and dogs,24 differences between humans and moths, and 38 differencesbetween humans and yeast. Such data provide no information asto the absolute times of divergence for humans, dogs, moths, andyeast. How might one calibrate the molecular clock to an absolutetime clock? What problems might one encounter in such acalibration?
n 12 12 of 25 Scientific evidence documents the pattern of evolution. The evidence exists in a variety of categories, including direct observation of evolutionary change, the fossil record, homology, and biogeography. Sort the following examples into the correct categories. Drag each phrase to the appropriate bin. > View Available Hint(s) Reset Help same genetic code in fireflies and tobacco plants similarities in mammalian forelimbs development of drug resistance in bacteria discovery of transitional forms of horses similarity of endemic island species to nearby mainland species vestigial pelvis in right whales discovery of shells of extinct species the high concentration of marsupial species in Australia biogeography direct observation of evolutionary change fossil record homology P Pearson 12:06 PM EX home um ik T Y U home enter 4. B shift end alt ctrl 144
A) Differentiate allopatric speciation and sympatricspeciation. Which type of speciation is more common andwhy? B) Is allopatric speciation more likely to occur inDumaran Island close to the main island of Palawan oron a more isolated island which is Culion Island of almostthe same size? Explain your prediction.
Which scenario would be a moder nexample of Lamarckianismm? A strain of houseflies resistant to insecticides emrges Squirrels separated by a river are found to be unable to interbreed Snails are found to have thicker shells generations after the introduction of a predator A son is bornw ith a portion of his right index finger mssing -- the same portion that was severed from his father's hand in an accident.
Microtaxonomy ( Species and Speciation ) People who do not believe in evolution often cite the classic example of man presumably evolving from the apes. They oftern ask: if humans evolved from apes, why are there apes until today? How will you provide a convincing answer that there is no contradiction in the existence of apes and humans at the same time?
Which of the following statements is true? Select one: O a Natural selection selects against those traits of an organism that bring it into a better adaptive relationship with its environment. Ob Natural selection favors those traits of an organism that bring it into a better adaptive relationship with its environment. Which of the following is not required for speciation to occur? Select one O a time Ob niche Oc. interbreeding Od genetic isolation
Rates of evolution appear to vary in different lin-eages. For example, the rate of evolution in the rat lineageis significantly higher than in the human lineage. Theserate differences are apparent whether one looks at changesin nucleotide sequences that encode proteins and are sub-ject to selective pressure or at changes in noncoding nucle-otide sequences, which are not under obvious selectionpressure. Can you offer one or more possible explanationsfor the slower rate of evolutionary change in the humanlineage versus the rat lineage?
Through _______, a body part of an ancestor is modified differently in different lines of descent. a. homologous evolution b. morphological convergence c. adaptive divergence d. morphological divergence