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From the information it is possible to conclude that A - VCE - SSCE Biology - Question 24 - 2004 - Paper 1
Question 24
From the information it is possible to conclude that A. the selective agent is the soot on the trees. B. prior to 1850 there were no B alleles in the moth populatio... show full transcript
Worked Solution & Example Answer:From the information it is possible to conclude that A - VCE - SSCE Biology - Question 24 - 2004 - Paper 1
Step 1
C. the relative fitness of the different coloured moths changed as the environment changed.
Answer
To answer this question, we can analyze the impact of the environmental changes brought on by industrialization on the moth population. The increase of the B allele frequency to 0.9 suggests that the environmental conditions favored moths with this allele (likely darker colored due to soot pollution). This illustrates the concept of natural selection, where certain traits become more advantageous due to changes in the environment, thereby increasing their relative fitness among the population. Thus, it can be concluded that the different coloured moths indeed experienced changes in fitness as the environment evolved.