Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 17, Problem 9SQ
Sex in many birds is typically preceded by an elaborate courtship dance. If a male’s movements are unrecognized by the female, she will not mate with him. This is an example of ______.
- a. reproductive isolation
- b. behavioral isolation
- c. sexual selection
- d. all of the above
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Which of these situations offers the lowest “opportunity for selection” for males?
A. Females choose mates with a fancy ornament.
B. Every female chooses one male to mate with for life.
C. Locations that females need access to in order to reproduce are rare.
D. Males fight each other for access to groups of females.
The fantastic coloration and behavioral displays in the birds of paradise that we watched in class were examples of differential sexual
selection driven by:
O a. Female-female combat
b. Male competition
O c. Female choice
O d. Intrasexual selection
Sexual selection frequently influences aspects of body form and can lead to_____ . a. a sexual dimorphism c. exaggerated traits b. male aggression d. all of the above
Chapter 17 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 17 - ___ is the original source of new alleles. a....Ch. 17 - Which is required for evolution to occur in a...Ch. 17 - Prob. 3SQCh. 17 - Prob. 4SQCh. 17 - The persistence of sickle-cell anemia in a...Ch. 17 - ___ tends to keep populations of a species similar...Ch. 17 - The theory of natural selection does not explain...Ch. 17 - Prob. 1DAACh. 17 - Prob. 2DAACh. 17 - Prob. 3DAA
Ch. 17 - Prob. 4DAACh. 17 - Which of the following is not part of how we...Ch. 17 - Sex in many birds is typically preceded by an...Ch. 17 - The difference between sympatric and parapatric...Ch. 17 - A fire devastates all trees in a wide swath of...Ch. 17 - Match the evolution concepts. ____ gene flow a....Ch. 17 - Change in allele frequency of a population is...Ch. 17 - Species have traditionally been characterized as...Ch. 17 - Rama the cama, a llama-camel hybrid, was born in...Ch. 17 - Two species or antelope, one from Africa, the...Ch. 17 - Prob. 4CT
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- #4: In clown fish (chose one answer) A. Individuals are protandrous.B. It is better to be male when you are small and a female when you are big.C. Everyone begins life as a male.D. All of the abovearrow_forwardSexual selection occurs whena. one sex has a higher fitness than the otherb. a species exhibits sexual dimorphismc. there is a male dominance hierarchy and only the alpha male reproduces. d. There is monogamous mating.e. A trait is favored by one sex such that individuals of the opposite sex possessing that trait have an increased likelihood of reproducing.arrow_forwardBirds are more likely to form pair-bonds than mammals because … Group of answer choices: A. Bird reproductive physiology makes it easier to judge paternity certainty B. Flight makes it easier to find mates C. Bird species are unable to defend critical resources the way mammals can D. Male mammals have higher levels of testosterone making them more likely to fight E. Either bird parent can sit on the nest or feed chicks while the chicks are too young to flyarrow_forward
- Intentionally breeding dogs for favorable traits to express in their offspring is an example of ___________ selection. Group of answer choices A-sexual B-artificial C-domestic D-natural E-biologicalarrow_forwardThe sacrifice of the life of an individual so that the genes of relatives may be passed on is called ________. a. operant learning b. kin selection c. kinesis d. imprintingarrow_forwardWhich of the following statements is a reason why females are usually the "choosier" sex? A. They expend fewer resources in caring for their offspring. B. They have higher potential fitness than males. C. They have fewer opportunities to contribute offspring than males. D. They directly compete with each other for mates.arrow_forward
- Eusociality and haplo-diploidy, in ants and bees, are often (though not always) correlated because… Group of answer choices: A. having twice as many genes allows queens to be far more capable of controlling other individuals. B. being able to control the sex of offspring allows parents to regulate the amount of cooperation. C. a worker can have more of her genes passed on in a new sister than in an offspring of her own. D. males have fathers but females don’t. E. it allows high levels of inbreeding to evolve without negative effects.arrow_forwardIn Biology of Beauty, Cowley found that contemporaryfemales are attracted to males with broad foreheads and strong chins, and that this effect persisted across different cultures. How did Cowley explain this result? A. This is a trick question- this attraction is culturally relative B. Males compete for access to females by developing these features as a form of male-male competition C. There is no evidence that females really are differentially attracted to males with these features D. Attraction to males with these features is adaptive for females because males with these traits are usually sexually mature and have healthy immune systems E. Only some human cultures value these traits as attractive.arrow_forward#1: Elephant Seals have a polygynous mating system, in which a few males mate with many females while other males do not mate at all. Nearly all females produce one offspring per year. Assuming a 50:50 sex ratio, we would expect the average reproductive rate to be (chose one answer) a. higher in females b. the same in males and females c. higher in males d. random e. none of the abovearrow_forward
- Why are polyandrous mating systems more rare than polygynous matings? a. Only males are capable of multiple rounds of reproduction within a single breeding season. b. Only females care for the young. c. Females usually experience more intrasexual selection pressure than males. d. Females usually devote more energy to offspring production and development.arrow_forwardThornhill’sresearch on mate selection among scorpionflies (Panorpa latipennis) indicatesthat male ____________ translates into successful mating opportunities.a.body sizeb.aggressivenessc.nuptial offeringd.both body size and aggressivenesse.both body size, aggressiveness, and nuptial offeringarrow_forwardBateman (1948) and Trivers (1972) came to the conclusion that sexual selection is typically a more potent evolutionary mechanism in males than females because typically… a. Females are likely to combat each other for mates b. Male limitations to reproductive success is gamete production c. Males typically participate in more parental care than females d. Females invest substantially more energy than males in gametearrow_forward
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