Q6.2. If there is NO SELECTIVE SURVIVAL based on shell thickness within a population of snails, what happens to shell thickness in response to crab predation? O The average shell thickness increases within each generation, but there is no change in shell thickness from generation to generation. O There is evolution by natural selection of shell thickness, and average shell thickness increases every generation. O There may be evolution of shell thickness, but not through natural selection and not necessarily toward thicker shells. There is no change in shell thickness within the population.

Q6.2. If there is NO SELECTIVE SURVIVAL based on shell thickness within a population of snails, what happens to shell thickness in response to crab predation? O The average shell thickness increases within each generation, but there is no change in shell thickness from generation to generation. O There is evolution by natural selection of shell thickness, and average shell thickness increases every generation. O There may be evolution of shell thickness, but not through natural selection and not necessarily toward thicker shells. There is no change in shell thickness within the population.

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter51: Ecology And The Biosphere

Section: Chapter Questions

Problem 13TYK

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