BIOLOGY 2E
2nd Edition
ISBN: 9781506699851
Author: OpenStax
Publisher: XANEDU PUBLISHING
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Textbook Question
Chapter 19, Problem 10RQ
What is assortative mating?
- when individuals mate with those who are similar to themselves
- when individuals mate with those who are dissimilar to themselves
- when individuals mate with those who are the most fit in the population
- when individuals mate with those who are least fit in the population
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Chapter 19 Solutions
BIOLOGY 2E
Ch. 19 - Figure 19.2 In plants, violet flower color (V) is...Ch. 19 - Figure 19.4 Do you think genetic drift would...Ch. 19 - Figure 19.8 In recent years, factories have become...Ch. 19 - What is the difference between micro- and...Ch. 19 - Population genetics is the study of: how selective...Ch. 19 - Which of the following populations is not in...Ch. 19 - One of the original Amish colonies rose from a...Ch. 19 - When male lions reach sexual maturity, they leave...Ch. 19 - Which of the following evolutionary forces can...Ch. 19 - What is assortative mating? when individuals mate...
Ch. 19 - When closely related individuals mate with each...Ch. 19 - What is a cline? the slope of a mountain where a...Ch. 19 - Which type of selection results in greater genetic...Ch. 19 - When males and females of a population look or act...Ch. 19 - The good genes hypothesis is a theory that...Ch. 19 - Solve for the genetic structure of a population...Ch. 19 - Explain the Hardy-Weinberg principle of...Ch. 19 - Imagine you are trying to test whether a...Ch. 19 - Describe a situation in which a population would...Ch. 19 - Describe natural selection and give an example of...Ch. 19 - Explain what a cline is and provide examples.Ch. 19 - Give an example of a trait that may have evolved...Ch. 19 - List the ways in which evolution can affect...
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- You are observing a grouse population in which two feather phenotypes are present in males. One is relatively dark and blends into the shadows well, and the other is relatively bright and more obvious to predators. The females are uniform dark feathered. Observing the frequency of mating between females and the two types of males, you have recorded the following: Mating’s with dark feathered males: 13 mating’s with a bright feathers male: 32 Propose a hypothesis to explain why females apparently prefer bright feathered males. What selective advantage might there be in choosing a male with alleles that make it more susceptible to predation? What data would help test this hypothesis?arrow_forwardSome bird species mate monogamously for life (i.e., individuals keep the same partner year after year). Other bird species are seasonally monogamous: they choose a new mate every year. Some bird species have what is called helpers-at-the-nest; these helpers are older offspring who stick around and assist their parents in taking care of babies born the next year. Kin selection would predict that you would find more instances of helpers-at-the-nest in the species that mate monogamously for life than in the seasonally monogamous species. Why? Be sure to address why they might still help in seasonally monogamous pairs.arrow_forwardHow does sexual selection benefit the choices of mating between men and women?arrow_forward
- Male California sea lion mating success is determined by the number of mates they can acquire. Larger males are more successful at maintain larger territories. Females remain in one territory for the duration of the mating season and larger territories support more females than smaller territories. Additionally, the most successful males will fast during mating season to remain present in their territory at all times. If they leave to hunt they risk loss of their territory and access to all the females present in it. Which of the following best describes sexual selection in this species? a. Males likely engage in male-male combat to maintain territories. b. Intersexual selection is likely stronger than intrasexual selection. c. Sexual selection on the females is stronger than on the males. d. Females will mate with smaller males at a higher frequency than larger malesarrow_forwardHow might the following findings be understood in terms of the adaptive value of female mate preferences? Deep-voiced men have more children in a traditional hunter- gatherer culture, the Hazda of Tanzania. Taller men are more likely to be chosen in speed-dating competitions than their shorter rivals (Belot and Fancesconi 2006) and are more likely to be chosen as sperm donors by women in California (Egan 2006). Images of men with slightly bloodshot eyes are judged less attractive than photographs of the same men in which the whites of the eyes are clear (Provine et al. 2011). Please Do not write from an online sourcearrow_forwardWhat 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_forward
- A population is solely comprised of 152 A2A2 individuals. 7 A1A1 individuals migrate in and contribute to the mating pool. What is the frequency of A1A2 individuals in the offspring?arrow_forwardIn a coastal marine habitat, a species of fish is found. During the breeding season, dominant males establish territories and mate with multiple females. Females deposit their eggs in nests built by the males, who provide no parental care after fertilization. What type of mating strategy is most likely exhibited here? Group of answer choices Monogamy Promiscuity Polyandry Polygynyarrow_forwardWhy is long-term parental care not associated with having many offspring during a reproductive episode?arrow_forward
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