Population genetics is concerned with the genetic composition of a population and how it changes with time. The gene pool of a population can be described by the frequencies of genotypes and alleles in the population.
The human MN blood type antigens are determined by two codominant alleles, LM and LN (see p. 000 in Chapter 5). The MN blood types and corresponding genotypes of 398 Finns from Karjala are tabulated here.
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