If the frequency of the HbS allele is 0.9 in a population, what is the frequency of the HbA allele (assuming this is a two-allele system)?

the answer is g1

the bald eagle got 50 because everything gets 10% of what they consume and since 50 is ten % of 500 hundred that means the   grasshopper had to have consumed a plant with 5,000 calories of energy