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Question

Fin color in guppies (a type of freshwater fish) is determined by one gene with two alleles, B (black fins) and b

(orange fins); simple dominance rules apply. In an aquarium with a population of 300 guppies, you observe the following genotypes:


BB       (Black Fins)    120 individuals           

Bb       (Black Fins)    105 individuals           

bb        (Orange Fins)  75 individuals             



1.    Calculate the allele frequencies of B.




2.    Calculate the allele frequencies of b. 

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