Question

In a population of 278, if observed number of MM, MN and NN blood groups is 78,138 and 62 respectively, what would be the frequency of M?

• A. 0.532
• B. 0.499
• C. 0.468
• D. 0.283

Answer 1

Answer: (A)

Proportion of MM blood group in the population = $\frac{78}{278}=.280$ Proportion of MN blood group in the population = $\frac{138}{278}=.496$ Proportion of NN blood group in the population = $\frac{62}{278}=.223$ Frequency of M = $\frac{2\times .280+.496}{2}=.53$ Frequency of N = $\frac{2\times .223+.496}{2}$ =.47