5.2
natural selection
Essential Idea: The diversity of life has evolved and continues to evolve by natural selection
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Nature of Science: Use theories to explain natural phenomena: the theory of evolution by natural selection can explain the development of antibiotic resistance in bacteria.
UNDERSTANDINGS:
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5.2.U1 Natural selection can only occur if there is variation amongst members of the same species.
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5.2.U2 Mutation, meiosis, and sexual reproduction cause variation between individuals in a species.
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5.2.U3 Adaptations are characteristics that make an individual suited to its environment and way of life.
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5.2.U4 Species tend to produce more offspring than the environment can support.
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5.2.U5 Individuals that are better adapted tend to survive and produce more offspring while the less well adapted tend to die or produce fewer offspring.
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5.2.U6 Individuals that reproduce pass on characteristics to their offspring.
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5.2.U7 Natural selection increases the frequency of characteristics that make individuals better adapted and decreases the frequency of other characteristics, leading to changes within the species.
APPLICATIONS & SKILLS:
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Application: Changes in beaks of finches on Daphne Major.
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Application: Evolution of antibiotic resistance in bacteria.
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RESOURCES:
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