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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. ... ... 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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Step 2
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 because:
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Survival of Mutated Rats: Rats that possess a mutation allowing them to consume Warfarin will survive while others that cannot eat it will die. This gives the mutated rats a survival advantage.
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Reproduction: Since the rats with the mutation survive, they are able to reproduce and pass on their alleles to their offspring.
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Population Growth: Over time, the proportion of the population consisting of rats with the mutation will increase, as more of these rats reproduce successfully.