The photograph shows the common rat Rattus norvegicus. State the level of classification for both parts of the binomial name Rattus norvegicus. Rattus. norvegicus. Some rats have a mutation which enables them to eat the rat poison Warfarin and survive. Suggest how the use of Warfarin could lead to an increase in the number of rats with this mutation.

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The photograph shows the common rat Rattus norvegicus - Edexcel - GCSE Biology - Question 6 - 2014 - Paper 1

Question 6

The photograph shows the common rat Rattus norvegicus. State the level of classification for both parts of the binomial name Rattus norvegicus. Rattus. norvegicus... show full transcript

Worked Solution & Example Answer:The photograph shows the common rat Rattus norvegicus - Edexcel - GCSE Biology - Question 6 - 2014 - Paper 1

Step 1

State the level of classification for both parts of the binomial name Rattus norvegicus.

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Answer

The levels of classification for the binomial name Rattus norvegicus are as follows:

Genus: Rattus
Species: norvegicus

Step 2

Suggest how the use of Warfarin could lead to an increase in the number of rats with this mutation.

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Answer

The use of Warfarin can lead to an increase in the number of rats with the mutation because:

Rats that possess the mutation can survive the Warfarin exposure, while non-mutated rats would perish.
As mutated rats reproduce, they pass on the mutation to their offspring, increasing the population of resistant rats.
Over time, the population will consist mainly of those with the mutation, thereby enhancing their survival and reproductive success in environments where Warfarin is present.

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