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Predict how prickles ("thorns") originated in roses. With increasing numbers of herbivores, roses needed defenses to discourage them. Prickles developed on stems to keep them away. Individuals with these prickles survived herbivore attacks and produced more offspring than other roses, increasing the frequency of the prickled roses in the population over time. Some roses hybridized with a close relative that had prickles. Individuals with these prickles survived herbivore attacks and produced more offspring than other roses, increasing the frequency of the prickled roses in the population over time. By chance, a mutation occurred in some roses that resulted in sharp bumps on the stems. Individuals with these early prickles survived herbivore attacks and produced more offspring than roses without the mutation, increasing the frequency of the prickled roses in the population over time. Chemicals in the saliva of herbivores triggered hormones in the roses that stimulated cell division in the stems, leading to prickles on their surface. Individuals with these prickles survived herbivore attacks and produced more offspring than other roses, increasing the frequency of the prickled roses in the population over time. Request Answer Submit

Predict how prickles ("thorns") originated in roses. With increasing numbers of herbivores, roses needed defenses to discourage them. Prickles developed on stems to keep them away. Individuals with these prickles survived herbivore attacks and produced more offspring than other roses, increasing the frequency of the prickled roses in the population over time. Some roses hybridized with a close relative that had prickles. Individuals with these prickles survived herbivore attacks and produced more offspring than other roses, increasing the frequency of the prickled roses in the population over time. By chance, a mutation occurred in some roses that resulted in sharp bumps on the stems. Individuals with these early prickles survived herbivore attacks and produced more offspring than roses without the mutation, increasing the frequency of the prickled roses in the population over time. Chemicals in the saliva of herbivores triggered hormones in the roses that stimulated cell division in the stems, leading to prickles on their surface. Individuals with these prickles survived herbivore attacks and produced more offspring than other roses, increasing the frequency of the prickled roses in the population over time. Request Answer Submit

Human Anatomy & Physiology (11th Edition)
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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Predict how prickles ("thorns") originated in roses. With increasing numbers of herbivores, roses needed defenses to discourage them. Prickles developed on stems to keep them away. Individuals with these prickles survived herbivore attacks and produced more offspring than other roses, increasing the frequency of the prickled roses in the population over time. Some roses hybridized with a close relative that had prickles. Individuals with these prickles survived herbivore attacks and produced more offspring than other roses, increasing the frequency of the prickled roses in the population over time. By chance, a mutation occurred in some roses that resulted in sharp bumps on the stems. Individuals with these early prickles survived herbivore attacks and produced more offspring than roses without the mutation, increasing the frequency of the prickled roses in the population over time. Chemicals in the saliva of herbivores triggered hormones in the roses that stimulated cell division in the stems, leading to prickles on their surface. Individuals with these prickles survived herbivore attacks and produced more offspring than other roses, increasing the frequency of the prickled roses in the population over time. Request Answer Submit
Transcribed Image Text:Predict how prickles ("thorns") originated in roses. With increasing numbers of herbivores, roses needed defenses to discourage them. Prickles developed on stems to keep them away. Individuals with these prickles survived herbivore attacks and produced more offspring than other roses, increasing the frequency of the prickled roses in the population over time. Some roses hybridized with a close relative that had prickles. Individuals with these prickles survived herbivore attacks and produced more offspring than other roses, increasing the frequency of the prickled roses in the population over time. By chance, a mutation occurred in some roses that resulted in sharp bumps on the stems. Individuals with these early prickles survived herbivore attacks and produced more offspring than roses without the mutation, increasing the frequency of the prickled roses in the population over time. Chemicals in the saliva of herbivores triggered hormones in the roses that stimulated cell division in the stems, leading to prickles on their surface. Individuals with these prickles survived herbivore attacks and produced more offspring than other roses, increasing the frequency of the prickled roses in the population over time. Request Answer Submit
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