With the Good Genes model of sexual selection: Question 3 options: a) females choose males that have attractive traits which will increase the reproductive success of her sons, but not her daughters. b) females choose males based on display traits that indicate if the male possesses alleles for high quality or good health. c) males provide females with a resource, such as food or a territory, that increases the female's health or ability to acquire energy.
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Determine whether each statement concerning female mate choice describes the good genes hypothesis, the Fisher's runaway hypothesis, or the Fisher-Zahavi hypothesis. Good genes Fisher's runaway Fisher-Zahavi Answer Bank Females find an arbitrary male trait attractive and drive the evolution of increasingly extreme versions of the trait by producing sons with the attractive trait and daughters that prefer the trait. Females choose mates by assessing a trait that directly reflects the genetic quality of the male and their offspring chances of reproducing increase because they inherited his genes. Females use an exaggerated trait that makes it harder for the male to survive as an honest indication of a potential mate's overall health and genetic quality, producing sons with the trait and daughters that prefer the trait.
Adi S.
Which example describes a direct benefit of female choice? A. a male helping to care for his offspring B. offspring inheriting quality genes from the male C. a female mating with numerous males D. both males and females remaining monogamous 2. In the "good genes" hypothesis, ornaments may indicate that males are any of the following except A. resistant to parasites. B. able to provide food. C. in top physical condition. D. able to wield costly "handicaps." 3. Mimic poison dart frogs choose a mate and remain loyal to their mate while raising young. What type of mating system do mimic poison dart frogs have? A. promiscuity B. polygyny C. polyandry D. monogamy 4. Male Dryomyza flies tap females after they have finished mating, which appears to be a post-copulatory courtship ritual. The female appears to choose how many eggs will be fertilized as a result of this ritual. What is this an example of? A. sperm competition B. cryptic female choice C. mate guarding D. toxic chemical use 5. What happens in sexual conflict? A. A heritable characteristic provides a fitness benefit to individuals of one sex but harms the other sex. B. Some males experience higher fitness than others when females choose mates based on showy ornaments. C. Males mate with multiple females, but females only mate with one male. D. Females mate with multiple males, but males only mate with one female.
Caitlyn H.
4. Which of the following are life history traits: a) size and age at reproduction b) size at birth c) number of offspring produced per reproductive episode d) all of the above are life history traits 5. If access to males limits female reproduction, we might expect: a) males to be selective among potential mates b) males to compete for access to females, or resources females require c) males to have weapons and/or be larger than females d) females to compete for males e) a and d above are likely, whereas b and c are less likely 6. What can we infer about natural selection from selfish genes such as meiotic drive alleles? a) Meiotic drive alleles do not inform our understanding of selection because they are not expressed and so can not be selected against b) genetic sequences that favor their own transmission tend to increase in populations. Period. End of Story. c) Selfish genes require transmission through close genetic kin d) Selfishness should be selected against because it reduces population growth
Sri K.
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