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Continuity of life on Earth — Question 18

QCAA 2020, Paper 1 · 1 mark

Q18 · 2020 · Paper 1Unclassified1 mark

QUESTION 18

The diagram shows the abundance (n) of phenotypic and genotypic variation for the colour trait of a species of butterfly.

Biology question figure

If these butterflies were placed in an environment with light-coloured trees, which option from the table would be the most likely effect on the allelic frequencies?

Frequency of allele/genotype

A

a

AA

aa

(A)

increase

decrease

(B)

increase

no change

(C)

decrease

increase

(D)

no change

increase

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