Aresearcher was performing a test to check the effect of induced point mutation. but the experimental mouse could not survive. what might be the reason for this?

A researcher was performing a test to check the effect of induced point mutation. But the experimental mouse could not survive. The reason for this is a lethal mutation. This is a mutation in which the effects can result in the death of an organism carrying the mutation. It is also known as lethal factor or lethal gene.

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b because they naturally adapt to their environment plz mark brainliest

explanation:

x would be the most and the least would be y because there are more fruit   and seeds than flock z has insects