Bateman (1948) and Trivers (1972) came to the conclusion that sexual selection is typically a more potent evolutionary mechanism in males than females because typically... O a. Females are likely to combat each other for mates O b. Male limitations to reproductive success is gamete production O c. Males typically participate in more parental care than females O d. Females invest substantially more energy than males in gametes

Bateman (1948) and Trivers (1972) came to the conclusion that sexual selection is typically a more potent evolutionary mechanism in males than females because typically... O a. Females are likely to combat each other for mates O b. Male limitations to reproductive success is gamete production O c. Males typically participate in more parental care than females O d. Females invest substantially more energy than males in gametes

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter17: Processes Of Evolution

Section: Chapter Questions

Problem 4SA

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In some bird species, the female chooses a mate that is mostsimilar to her in size. This supportsa. the good genes hypothesis.b. the runaway hypothesis.c. the sexual dimorphism hypothesis.d. All of these hypotheses could be true.e. None of these hypotheses are true.
How does sexual selection differ from natural selection? a. It does not require heritable traits. b. It determines which individuals get to mate. c. Variation is not required. d. It only involves males.
Which statement/s can best explain how evolutionary perspective help us understand senescence? (a) Evolutionary theory allows scientists to compare closely related species that differ inhow they invest in reproduction and in body maintenance, to test for effects on the agingprocess. (b) Understanding evolution can generate predictions about how individuals with certain suites of life-history characteristics might fare in the aging process when compared to other individuals without those characteristics. (c) Because aging is a natural process for all species, explaining its evolution through natural selection is insufficient. (d) Evolutionary studies provides insight into the historical development of adaptations, such as the number of offspring an individual has, that may contribute to life-history trade-offs, such as aging. A. Three of the 4 statements are correct. B. (a) and (d) C. (a) only D. (b) and (c)
1) Darwin's studies of Galapagos finches are well known in the study of evolution. These studies have been instrumental in helping us understand how new species evolved from pre-existing species. Which statement is true about the speciation of the Galapagos finches? A) The finches evolved traits to help them survive in different environments. B) The finches had different traits that influenced the environment in which they chose to live. C) Genetic variation occurred amongst the finches, giving some a genetic advantage in a changing environment, allowing them to better survive. D) Members of the original population evolved in such a way that it became impossible for individuals from the two new populations to interbreed. Not graded
1) Darwin's studies of Galapagos finches are well known in the study of evolution. These studies have been instrumental in helping us understand how new species evolved from pre-existing species. Which statement is true about the speciation of the Galapagos finches? A) The finches evolved traits to help them survive in different environments. B) The finches had different traits that influenced the environment in which they chose to live. C) Genetic variation occurred amongst the finches, giving some a genetic advantage in a changing environment, allowing them to better survive. D) Members of the original population evolved in such a way that it became impossible for individuals from the two new populations to interbreed.
In the bighorn sheep population of North America, what would happen if all of the large-bodied, large-horned males were hunted, leaving only small-bodied, small-horned sheep? a)Males could no longer protect females from predators, so eventually all of the sheep would be eaten by predators. b)There would be no phenotypic variation in the population of sheep, and natural selection could not lead to males with larger horns in the future. C)The size of horns would no longer be a heritable traits, and would males would not pass this trait to their offspring. d)Males would begin to use their horns for other behaviors, such as hunting prey or being better competitors.
What is meant by “sexual selection”? a. Having an XX or XY chromosome pattern determines whether one develops as a female or a male. b. Hormones during a sensitive period produce longlasting effects on anatomy and behavior. c. Some people choose to switch from one gender identity to another. d. Evolution favors characteristics that make an individual more appealing to the opposite sex.
Darwin's studies of Galapagos finches are well known in the study of evolution. These studies have been instrumental in helping us understand how new species evolved from pre-existing species. Which statement is true about the speciation of the Galapagos finches? A) The finches evolved traits to help them survive in different environments. B) The finches had different traits that influenced the environment in which they chose to live. C) Genetic variation occurred amongst the finches, giving some a genetic advantage in a changing environment, allowing them to better survive. D) Members of the original population evolved in such a way that it became impossible for individuals from the two new populations to interbreed. not graded use photo
Which evolutionary process is most responsible for the increased occurrence of tusklessness in female elephants in Gorongosa National Park? a)Sexual selection b)Mutation c)Natural selection d)Genetic drift Im thinking either b or c but im not sure mabye c but im not really sure about the whole thing
Which of the following is not required for a behavioral trait toevolve by natural selection?(A) In each individual, the form of the behavior is determinedentirely by genes.(B) The behavior varies among individuals.(C) An individual’s reproductive success depends in part onhow the behavior is performed.(D) Some component of the behavior is genetically inherited.
A male and female gibbon that are similar in size likely demonstrate the lack of sexual dimorphism… A : due to the polygamous social structure in gibbons. B : as the result of unequal access to resources within their environment. C : which is not related to social structure in gibbons. D : due to adaptations related to Allen’s rule. E : due to decreased competition for mates in a monogamous social structure.
What is the proximate cause of male deer fighting over females?a. to determine their supremacy over other malesb. to injure other males so that these other males cannot mate withfemalesc. to maximize the number of genes they pass ond. because changes in day length stimulate this behaviore. because fighting helps rid the herd of weaker individuals