Question

1. if the allele for a long nose (n) is dominant to the allele for a short nose (n), what will be the relative frequency of n in a population?

it will be more frequent than n.
it could be less frequent than n.
it will be equally frequent to n.
it will be less frequent than n.

Explanation:

Dominance of an allele (N is dominant over n) does not directly determine the relative frequency of the recessive allele (n) in a population. Allele frequencies depend on factors like natural selection, genetic drift, mutation, and gene flow. So the frequency of n could be less than N, equal, or even more (though less likely if N is advantageous, but not a certainty). The first option is wrong as dominance doesn't mean recessive is more. Third is wrong as there's no guarantee of equality. Fourth is wrong as it's not a definite "will be less"—it's possible but not certain. The second option acknowledges the uncertainty.

Answer:

B. It could be less frequent than N.