Fitnesses of the three genotypes at the sickle cell anemia locus in a population from Nigeria

▪ Table

Fitnesses of the three genotypes at the sickle cell anemia locus in a population from Nigeria

genotype total frequency of Hb^S

   Hb^AHb^A    Hb^AHb^S         Hb^SHb^S

observed number 9,365 2,993 29 12,387

observed frequency 0.7560 0.2416 0.0023 1 0.1232

expected frequency 0.7688 0.2160 0.0152 1 0.1232

survival efficiency 0.98 1.12 0.15

relative fitness 0.88 1 0.13

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