Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 25, Problem 17TYK
Summary Introduction
Introduction: Evolution is the process of modifications in the characteristics of the various types of an organism over successive generations. The changes in the
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Which of the following best describes Muller's ratchet?
a.
Asexually reproducing lineages are more prone to attack from parasites.
b.
Asexually reproducing species are less likely to go extinct over time.
c.
Asexually reproducing species accumulate mutations and can not remove them from lineages because mutations are passed down to all offspring.
d.
Asexually reproducing species are less likely to evolve parental care over time.
Which of the following is least likely to be a process associated with sympatric speciation?
A.) specialization on different food resources
B.) specialization on different habitats
C.) mutations that cause differences in pheromones
D.) mutations that cause changes in ploidy
Which of the following is a problem with using the Biological Species Concept?
A. it doesn't apply to asexual populations
B. It doesn't apply to tropical organisms
C. it doesn't take into account reproductive compatibility
D. there are no issues with this species concept
Chapter 25 Solutions
Study Guide for Campbell Biology
Ch. 25 - Why do we say that, for life to have begun, the...Ch. 25 - Prob. 2IQCh. 25 - Prob. 3IQCh. 25 - Prob. 4IQCh. 25 - Prob. 5IQCh. 25 - a. Mammals originated 180 mya but did not change...Ch. 25 - Prob. 7IQCh. 25 - a. According to the model of species selection,...Ch. 25 - Prob. 1SYKCh. 25 - Label the eons, eras, and key events shown on the...
Ch. 25 - Describe three major processes that have...Ch. 25 - Prob. 4SYKCh. 25 - The primitive atmosphere of Earth may have favored...Ch. 25 - Prob. 2TYKCh. 25 - Prob. 3TYKCh. 25 - The half-life of carbon-14 is 5,730 years. A...Ch. 25 - Prob. 5TYKCh. 25 - Prob. 6TYKCh. 25 - Prob. 7TYKCh. 25 - Look back at the Geologic Record in Table 25.1....Ch. 25 - Prob. 9TYKCh. 25 - According to the endosymbiont theory, a. the first...Ch. 25 - Prob. 11TYKCh. 25 - Prob. 12TYKCh. 25 - Prob. 13TYKCh. 25 - Prob. 14TYKCh. 25 - Prob. 15TYKCh. 25 - Prob. 16TYKCh. 25 - Prob. 17TYKCh. 25 - What is meant by the concept of species selection?...
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- Look at picture attached A) What does the phylogeny suggest about the evolutionary process that led to the trait differences by habitat? a. convergent evolution b. adaptive radiation c. phenotypic plasticity B) Choose different functional forms from two of the habitats shown in the collage and describe how one or more differences in form may represent an adaptation to their different environment. Example: compare plant form for lobeliads in montane bog to cloud forest understoryarrow_forwarddescribe the two general steps that are required for a new species to arise?arrow_forwardExplain into details the concept of speciation .arrow_forward
- Hox genes Group of answer choices a. are only found in nematodes and arthropods b. are pseudogenes that occur only in fungal DNA c. are one of the shared, derived characters that unify fungi and animals d. are single genes that act as master switches that activate other genes, which ultimately forms an entire segment of an animal's body e. are pseudogenes that occur only in animal DNAarrow_forwardWhich of the following is an example of postzygotic reproductive isolation?a. Sperm of species A dies in the oviduct of species B before fertilization can take place.b. Hybrid zygotes between species A and B are spontaneously aborted early indevelopment.c. The mating seasons of species A and B do not overlap.d. Males of species A are not attracted to the pheromones produced by the females ofspecies B.arrow_forwardThe biological species concept depends on the existence of barriers to reproduction. What are they? Does this species concept apply in all situations? Think of an example from nature where the biological species concept would NOT be that applicable. Which species concept would be better in this example? How does speciation occur? What environmental factors might contribute to speciation? Can an individual speciate? Use terminology for the two kinds of speciation we have learned about. What is “gene flow”? What does it mean if there is NO gene flow? Two groups of individuals are separated by either side of a canyon. One researcher found that they do not cross the canyon at any point. The group on the north side have fluffy tails and thicker coats, and they do not eat moss. The south side individuals eat moss almost exclusively, have a thin coat and tail, but otherwise are generally identical. When in the lab they mated successfully, and the offspring of that mating also mated…arrow_forward
- Which row in the chart below best describes ase reproduction? 6) Comparison of Offspring to Parents Number of Row Parents (1) one identical (2) one different (3) two identical (4) two different A) 1 B) 2 C) 3 D) 4arrow_forwardA shared ancestral feature is a/an select one a. symplesiomorphy b.synapomorphy c.autapomorphyarrow_forwardInsectivora is a taxonomic grouping that was used to describe insect-eating mammals like armadillos, hedgehogs, moles, and anteaters. The taxonomy of these animals has beea revised in recent years, and Insectivora is no longer widely accepted because this group of organisms lacks one common ancestor and is instead descended from several ancestors. Which term best describes Insectivora? A. Polyphyletic B. Monophyletic C. Haplophyletic D. Paraphyleticarrow_forward
- The transfer of genes by a mechanism not involving asexual reproduction is called: a. meiosis b. web of life c. horizontal gene transfer d. gene fusionarrow_forwardOptions are a. Hybrid offspring. b. Speciation c. Adaptive radiation. d. Mechanical isolation.arrow_forwardSieve tubes and sieve elements are a. homoplastic because they have different function. b. homologous because they have similar function. c. homoplastic because their common ancestor was single-celled. d. structures involved in transport within animalsarrow_forward
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