Because you want to see if you can determine a more accurate measurement of the frequency of the disease allele in your population, your sample 2,000 individuals and genotype them for your disease. you get the following results:

NN (not affected): 1,326 ppl
Nn ( carrier): 633 ppl
nn (affected): 41 ppl

What is the frequency of the normal and the disease allele in the population using this sample?
If this population is randomly mating and the disease allows survival to breeding age, what will the percentage of NN, Nn and n indviduals on te following generation be?
If this disease is FATAL in childhood, what will be the percentage of NN, Nn and nn individuals in the following generation?