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Natural Selection Mechanisms and Adaptation
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Grade Level
Grade 7
7.55 Natural Selection Mechanisms and Adaptation
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A student says, 'The increase in higher salt tolerance among seagrass plants proves natural selection.' Which additional evidence would make the claim strongest?
A
Show that the seagrass plants practiced using higher salt tolerance until all individuals developed it during their lifetimes.
B
Show that the trait (higher salt tolerance) is inherited and that individuals with higher salt tolerance produced more surviving offspring than individuals with lower salt tolerance when lagoon water becomes saltier.
C
Show that one unusually lucky group with higher salt tolerance survived a random accident unrelated to salt tolerance.
D
Show only that more seagrass plants with higher salt tolerance moved into the area from another population.
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