Based on the information in the graph, which one of the following is most likely?
1 - VCE - SSCE Biology - Question 28 - 2020 - Paper 1
Question 28
Based on the information in the graph, which one of the following is most likely?
1. The founder effect can explain the change in allele frequency in the first three... show full transcript
Worked Solution & Example Answer:Based on the information in the graph, which one of the following is most likely?
1 - VCE - SSCE Biology - Question 28 - 2020 - Paper 1
Step 1
1. The founder effect can explain the change in allele frequency in the first three generations.
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Answer
The graph does not provide evidence supporting a founder effect, as it typically relates to an initial population being starters for a new population, resulting in a limited genetic diversity. The changes in allele frequencies observed do not align with this explanation.
Step 2
2. Genetic diversity within the population remains unchanged over the 10 generations.
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Answer
This statement is unsupported as the graph shows significant fluctuations in allele frequencies, which typically indicates changes in genetic diversity across generations.
Step 3
3. The appearance of Allele 3 after Generation 3 may be explained by gene flow.
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Answer
This is a plausible explanation. The introduction of Allele 3 around Generation 4 could be attributed to gene flow from another population, causing the allele to suddenly appear in the observed population.
Step 4
4. A bottleneck event occurred between Generation 7 and Generation 9.
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Answer
The graph shows a significant decrease in allele frequencies around Generations 7 to 9 which is indicative of a bottleneck event, leading to reduced genetic variance and frequency.
