IB ESS HL 3.1.5 Natural Selection Process Questions

Trace variation, selection pressure, differential reproduction and inheritance in a natural-selection example.

Exam points

analyse how inherited variation and environmental selection pressures produce differential survival and reproduction
link genotype variation, mutation and selection to adaptation such as increased temperature tolerance
use an ecological example to trace variation, selection advantage, reproductive success and inheritance across generations

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Study 3.1.5—Natural selection process conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

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Figure:Fact file on Mindo cloud forest

Figure:Fact file on Mindo harlequin toad

red and falls off.

There is no cure and those infected experience $\mathbf{8 5 - 1 0 0} \boldsymbol{\%}$ mortality.

Explain how the disease in the Mindo harlequin toad could contribute to the evolution of resistance to this disease in the species for future generations.

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IB ESS HL 3.1.5 Natural Selection Process Questions question 1