IB Biology HL A4.1 Evolution and speciation questions

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Question 1

Paper 2Easy6 marks

Researchers record the percentage of beetles in a population with an inherited pale-colour characteristic.

GenerationBeetles with pale colour / %
132
547

One adult beetle develops greater leg-muscle mass through repeated exercise. This change is not passed to its offspring.

(a)

Calculate the increase in the percentage of beetles with pale colour from generation 1 to generation 5, in percentage points.

[2]
(b)

State what is meant by evolution.

[2]
(c)

Explain why the change in leg-muscle mass in the adult beetle does not count as evolution.

[2]

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