Survival of Species over Several Generations

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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If two species in close proximity can produce hybrid offspring, the result is a region called a
hybrid zone. The graph below shows the survival rates of two species (Species A and Species
B) and their hybrid over several generations. Which of the following best describes what will
happen to these populations in the future?
Survival of Species over Several Generations
700
600
500
Species A
400
Species B
Hybrid
Species
200
100
80
0
2
Generation
©2012 FLVS
Hybrids will be geographically isolated from the parent species, decreasing gene flow.
Reinforcement of reproductive barriers will increase natural selection against the hybrids.
OThe gene pool of the two parent species will become increasingly similar over time.
When hybrids mate with other hybrids, their offspring will resemble the original parent speci
Population
300
Transcribed Image Text:If two species in close proximity can produce hybrid offspring, the result is a region called a hybrid zone. The graph below shows the survival rates of two species (Species A and Species B) and their hybrid over several generations. Which of the following best describes what will happen to these populations in the future? Survival of Species over Several Generations 700 600 500 Species A 400 Species B Hybrid Species 200 100 80 0 2 Generation ©2012 FLVS Hybrids will be geographically isolated from the parent species, decreasing gene flow. Reinforcement of reproductive barriers will increase natural selection against the hybrids. OThe gene pool of the two parent species will become increasingly similar over time. When hybrids mate with other hybrids, their offspring will resemble the original parent speci Population 300
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