The relative frquency of n in a population from the given premise of the allele is; It could be less frequent than N.
Relative frequency is also called experimental probability and in an event , it is defined as the ratio of the number of outcomes in which a specified event occurs to the total number of trials. Though this not in a theoretical sample space but in an actual experiment.
In this question, long nose (N) is dominant to the allele for a short nose (n) and so the relative frequency will definitely be less frequent than N.
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