EBK BIOLOGY: CONCEPTS AND APPLICATIONS
9th Edition
ISBN: 8220100477805
Author: STARR
Publisher: CENGAGE L
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Chapter 17, Problem 9SQ
Summary Introduction
Introduction:
The prezygotic isolation mechanism prevents the fusion of the gametes; therefore, it occurs before fertilization while the postzygotic isolating mechanism occurs after fertilization. The prezygotic mechanism always obstructs copulation through different types of barriers like habitat, temporal, and behavioral isolation.
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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 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.
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-biological
Chapter 17 Solutions
EBK BIOLOGY: CONCEPTS AND APPLICATIONS
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Birds 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_forwardWhich of the following is not a reproductive barrier associated with behavioral isolation? a flashy feathers b courtship dance c attractive calls/songs d time of dayarrow_forwardWhich of the following traits is more associated with an Opportunistic (Equilibrial) species? Which of the following traits is more associated with an Opportunistic (Equilibrial) species? A. Short maturation time B. Producing offspring at many different times over the course of life C. Producing a lot of eggs at one time D. High juvenile mortality E. High level of parental carearrow_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_forwardThe good genes model of sexual selection is a popular hypothesis for mate choice. What is an underlying flaw with the hypothesis that must be explained? Group of answer choices A. there is no evidence for mate choice in animals B. sexual selection will remove genetic variation for fitness C.animals are not capable of a sense of beauty D. different species have different traits that are important in mate choice E. all genes confer equal fitness in lab experimentsarrow_forwardCourtship rituals are thought to have come about througha. intrasexual selection.b. agonistic behavior.c. intersexual selection.d. kin selection.arrow_forward
- In most species, which sex is more likely to be doing the "selecting" in sexual selection? * Males Females Sign out INTL V430 novo 4. @ %23 %24 % backspace 8. e r y tab d. f j k a V b m C alt ctri altarrow_forwardBehavioral isolation is considered which type of reproductive barrier? a prezygotic b postzygotic c overlapping d heritablearrow_forwardIn dioecious plants, males usually produce larger flowers that attract more pollinators than do females. This is an example of a. character displacement b. sexual selection through female choice c. sexual selection through male-male competition d. divergence in resource use e. a cost of reproductionarrow_forward
- Thornhill’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_forwardA new species is discovered in which males care for offspring after birth, and females leaves the nest immediately. In this species, males are likely to A. Have more offsprings overall than females. B. Have fewer offspring overall than females. C. Be promiscuous. D. Have lower parental investment.arrow_forwardA new species is discovered in which males care for offspring after birth, and females leave the nest immediately. In this species, males are likely to a. be promiscuous. b. have lower parental investment. c. have fewer offspring overall than females. d. have more offspring overall than females.arrow_forward
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