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6 (a) The photograph shows the common rat Rattus norvegicus - Edexcel - GCSE Biology - Question 6 - 2014 - Paper 1
Question 6
6 (a) The photograph shows the common rat Rattus norvegicus. State the level of classification for both parts of the binomial name Rattus norvegicus. Rattus. n... show full transcript
Worked Solution & Example Answer:6 (a) The photograph shows the common rat Rattus norvegicus - Edexcel - GCSE Biology - Question 6 - 2014 - Paper 1
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Suggest how the use of Warfarin could lead to an increase in the number of rats with this mutation
Answer
The use of Warfarin can lead to an increase in the number of rats with the mutation as follows:
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Survival of the Fittest: Rats that possess the mutation allowing them to metabolize Warfarin will survive despite the presence of the poison, while non-mutated rats will perish.
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Reproductive Advantage: The surviving mutated rats will reproduce, passing on the allele for Warfarin resistance to their offspring.
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Population Growth: Over time, as more rats with the mutation survive and reproduce, the proportion of the population that carries the Warfarin-resistant allele will increase.