Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Compare and contrast directional, stabilizing, disruptive, and balancing selection.
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- Imagine strong directional selection is applied, favoring large values of this trait. After one generation, what you predict would occur to the trait values in in each of the two different scenarios of 'h'?arrow_forwardIn a population of plants, individuals with medium-sized leaves have the highest survival and reproductive success because they can efficiently capture sunlight without losing too much water. Which type of selection is occurring in this scenario? Stabilizing selection Disruptive selection Frequency-dependent selection Directional selectionarrow_forwardWhich form of conditioning is used most for behavior modification? Why does this form work better? Why would Classical Conditioning help someone in their daily life functioning? Which form of conditioning would you most likely see in a classroom setting? Create your own examples of each form of conditioning. Be sure to include the following information in your answer. In addressing classical conditioning: Identify UCS, UCR, NS, CS, and CR. Discuss any stimulus generalization that you observed. Discuss any extinction and spontaneous that occurred. In addressing operant conditioning: Identify negative and positive reinforcements and punishments. Label the schedule of reinforcement or punishment.arrow_forward
- Sexual and Ecological selection often oppose each other: give 2 examplesarrow_forwardIn a population that had mice ranging in color from very light to very dark, which type of selection would result in a population of mostly dark mice? Group of answer choices Directional selection Disruptive selection Stabilizing selectionarrow_forwardIn a population of frogs, individuals with green coloration are camouflaged on leaves and are less likely to be eaten by predators. However, as the number of green frogs increases, predators learn to search for them more effectively, making it advantageous to be a less common color. What type of selection is occurring in this scenario? Disruptive selection 8888 Positive frequency-dependent selection Stabilizing selection Negative frequency-dependent selection Directional selectionarrow_forward
- What type of selection reduces genetic variation in a trait? disruptive? balancing? directional? stabilizing? Explain whyarrow_forwardAccording to Hamilton's Rule, in which scenario is selection for cooperative breeding expected to be the strongest? but lose the chance to have Helpers raise and increase the survival and reproduction of of their own offspring. O 100 additional 2nd cousins twice removed to whom they are 0.00781 (0.781%) genetically related; 2 of their own offspring. 60 additional 1st cousins once-removed to whom they are 0.0625 (6.25%) genetically related; 1 of their own offspring. O 50 additional grandnieces/nephews to whom they are 0.125 (12.5%) genetically related; 2 of their own offspring. None of the three scenarios are likely to result in the evolution of cooperative breeding according to Hamilton's Rule.arrow_forwardSelection at one locus acts to locally maximize mean population fitness if: The population size is constant Selection is frequency independent The population is increasing in size Selection is frequency dependent The marginal fitness values are equalarrow_forward
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