Biology: Concepts and Applications (MindTap Course List)
10th Edition
ISBN: 9781305967335
Author: Cecie Starr, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 17, Problem 7SA
Summary Introduction
Introduction:
Maintenance of separate identities of different species is done by prevention of exchange of gene pool between different populations. This prevention of gene flow between two populations is done using different techniques that keep one population isolated from the other.
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When males and females of a population look or act differently, it is referred to as ________. a. sexual dimorphism b. sexual selection c. diversifying selection d. a cline
Which 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.
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E.
High level of parental care
Birds are more likely to form pair-bonds than mammals because …
Group of answer choices:
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Chapter 17 Solutions
Biology: Concepts and Applications (MindTap Course List)
Ch. 17 - _________is the original source of new alleles. a....Ch. 17 - Prob. 2SACh. 17 - Match the modes of natural selection with their...Ch. 17 - Prob. 4SACh. 17 - The persistence of the sickle allele at high...Ch. 17 - Prob. 6SACh. 17 - Prob. 7SACh. 17 - Which of the following is not part of how we...Ch. 17 - Prob. 9SACh. 17 - Prob. 10SA
Ch. 17 - Prob. 11SACh. 17 - Prob. 12SACh. 17 - In evolutionary trees, each node represents an...Ch. 17 - Match the evolutionary concepts. ____gene flow a....Ch. 17 - The evolution of wings helped the insect clade to...Ch. 17 - Species have traditionally been characterized as...Ch. 17 - Rama the cama, a llama-camel hybrid, was born in...Ch. 17 - Two species of antelope, one from Africa, the...Ch. 17 - Prob. 4CT
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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 selectionarrow_forwardTwo animals of the same______ are able to breed to produce fertile offspring. A.Class B• Genus © Species D. All of the abovearrow_forwardWhy 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_forward
- When there are no one in-between, example tounge twisting. A. sexual variation B. Discontinous variation C. Sexual Variation D. Nonearrow_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 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.arrow_forward
- Suppose two species of morning glories are reproductively isolated because in one species the flowers bloom in early April and in the other species they flower in mid-May. This would be an example of _______ isolation, which is a form of _______ isolation. a. habitat; prezygotic b. temporal; prezygotic c. temporal; postzygotic d. behavioral; postzygotic e. habitat; postzygoticarrow_forwardWhich of the following traits does not describe a r-selected species? A. rapid development B. low parental investment C. high reproductive rates D. short life spans E. late maturationarrow_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_forward
- 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 abovearrow_forwardWhich of the following statements does not support the conclusion that giraffes are k-selected species? a. Giraffes are approximately 6’ tall and weigh 150 lbs at birth. b. Wild giraffes begin mating at 6-7 years of age. c. Newborn giraffes are capable of coordinated walking within an hour of birth, and running within 24 hours of birth. d. Giraffes rarely give birth to twins.arrow_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_forward
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