(Solved) Am I missing something? Bio 30 Population Genetics Genotype Frequency Question

The M and N factors are glycoproteins that are found on the surface of red blood cells. Unlike other types of red blood cell antigens, the M and N factors do not cause antibody reactions in human blood transfusions. People with type M blood are homozygous for the M allele, and people with type N blood are homozygous for the N allele. Heterozygous individuals have type MN blood. In a study of a population of Inuit living in the Northwest Territories, 640 people had blood type M, 320 had blood type MN, and 40 had blood type N. Calculate the frequency of the genotypes in the population studied. Show all of the steps to your solutions. 7 marks.

Hi guys, so as you can see I've got this question, and it's worth seven marks, so it matters, but I feel as if I'm missing something because I didn't go through a lot of calculations, for this course 7 mark questions tend to be ridiculously long and complicated.

My work:
640+320+40=1,000
640/1,000=0.64
320/1,000=0.32
40/1,000=0.04
M=0.64 or 64%
MN=0.32 or 32%
N=0.04 or 4%
Is that really it, or do I need to do some more math?

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Am I missing something? Bio 30 Population Genetics Genotype Frequency Question

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