If in the study population of people, the phenotypes observed have a frequency of: M blood type (MM genotype) 64/200 MN blood type (MN genotype) 120/200 N blood type (NN genotype)... If in the study population of people, the phenotypes observed have a frequency of: M blood type (MM genotype) 64/200 MN blood type (MN genotype) 120/200 N blood type (NN genotype) 16/200 What is the frequency of M? What is the frequency of N? What is the total number of alleles?
Understand the Problem
The question gives the frequency of M, MN, and N blood types in a population. It asks to calculate the frequency of the M and N alleles, and the total number of alleles.
Answer
Frequency of M is 0.62, frequency of N is 0.38, and total alleles is 400.
The frequency of M is 0.62. The frequency of N is 0.38. The total number of alleles is 400.
Answer for screen readers
The frequency of M is 0.62. The frequency of N is 0.38. The total number of alleles is 400.
More Information
The MN blood group system is an example of codominance, where both alleles are expressed equally in the heterozygote (MN). The allele frequencies are calculated based on the observed genotype frequencies in the population.
Tips
A common mistake is calculating allele frequencies directly from genotype frequencies without accounting for the contribution of heterozygotes. Remember to consider that heterozygotes (MN) carry one M allele and one N allele.
Sources
- population genetics and the hardy-weinberg law answers to sample ... - k-state.edu
- Population Genetics - Calculating Gene Frequency - biologyexams4u.com
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