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
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 22.5, Problem 1R
Summary Introduction
To review:
The ways, in which pollinator specialization in case of plants and sexual selection in animals increases the rates of
Introduction:
Speciation is the process by which species evolve from an ancestral population. The rate of speciation (although slow) depends on a number of factors such as diet, dispersal ability, and sexual selection.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
What are some other prezygotic reproductive barriers besides a mating dance?
List three factors that are contributing to the decline of pollinator populations
What are consequences of overpopulation?
Chapter 22 Solutions
Life: The Science of Biology
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- What are indirect fitness benefits of siblicide? When would an individual gain more from siblicide than from inclusive fitness benefits? When might it be worth it for a subordinate to fight to the death with its dominant sibling?arrow_forwardOver evolutionary time, Yucca moths developed a specialist mutualism with Yucca plants. Select all the statements that reflect EITHER costs or benefits of forming this specialist mutualism The highly specialized relationship with Yuccas and Yucca Moths reduces potential competition with other pollinators The highly specialized relationship with Yuccas and Yucca Moths increases potential competition with other pollinators Yucca moths can become locally extinct if Yucca plants are removed or die The fitness of Yucca plants would be dramatically reduced if a pesticide was sprayed killing Yucca moths none of the abovearrow_forwardWhat would a study of both monozygotictwins raised together and monozygotictwins raised apart tell you about environmentalinfluences?arrow_forward
- Which type of selection is represented by a population of flower that grows either short stems or long stems? Stabalizing Directional Disruptivearrow_forwardWhat is the difference between prezygotic and postzygotic reproductive isolating mechanisms? List some different types of each.arrow_forwardWhy are species of weedy plants more likely to be r-selected than K-selected? Why are most species with large body size K-selected? What other general patterns of lifestyle are associated with either r- or K-selection?arrow_forward
- If the variation in flower-tube length in this population were due solely to environmental factors, what would be the expected change in flower-tube length over several generations? Why or why not?arrow_forwardConsider a flower population that produces different sizes of blooms and depends on bees for reproduction. Large blooms attract larger bees; small blooms attract smaller bees. Describe how changes in the bee population might lead to disruptive, stabilizing, and directional selection in the flowers.arrow_forwardhow does natural selection and adaptation happen in pests with the use of pesticides?arrow_forward
- An alpine wildflower species varies in flower color. There are red-flowered plants (RR), red and white-flowered plants (RW) and white-flowered plants (WW) in population. Initially, the genotype frequencies are red RR= 0.35, red/white RW=0.34. and white WW=.31 Flower color affects reproduction success because it influences pollinator behavior. After a new pollinator colonizes the meadow where this wildflower lives, the average number of offspring per plant is red=105, red/white= 89, white =96 What will be the genotype frequencies in the first generation of plants following natural selection due to the new pollinator? Round all values to 2 decimal places In the rationale, explain how you arrived at the answer A. RR=.71 RW=.07 WW=.22 B. RR=.34 RW=.60 WW=.06 C.RR=.68 RW=.23 WW=.09 D. RR=.45 RW=.52 WW=.03 E RR=.38 WW=.31 WW=.31 F. RR=.35RW=.34 WW=.31 Rationale:_______________________________________arrow_forwardWhat factors determine the birth rates and death rates in apopulation?arrow_forwardwhat are some plausible phenotypic changes that we might see in different vector species as climate change progresses? How might these changes affect interspecific competition?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Mechanisms of Genetic Change or Evolution; Author: Scientist Cindy;https://www.youtube.com/watch?v=5FE8WvGzS4Q;License: Standard Youtube License