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A black pig is mated to a white pig. In the F1 generation there are 5 black and 5 white pigs. Give the genotypes of the parents

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marianaegarciaperedo

Assuming that only one gene coding for the trait and the inheritance pattern is complete dominance, the genotypes of the parents are Bb and bb

Let us assume that the color is determined by a single diallelic gene that expresses complete dominance.

Available data

  • Black parent
  • White white parent
  • F1 = 5 white pigs + 5 black pigs

Since no further information is provided, we will also assume that white is the recessive phenotype, while black is the dominant phenotype.

  • The allele that codes for black is B
  • The allele that codes for white is b

Genotypes        Phenotypes

BB                             Black

Bb                              Black

bb                              White

Since half of the progeny is h0m0zygous recessive and the other half expresses the dominant phenotype, following the assumptions of complete dominance,  we can assume that

  • the white parent is h0m0zyg0us recessive
  • the black parent is heterzyg0us.

Cross: Black individual with white individual    

Parentals)   Bb     x     bb

Gametes)  B    b       b    b

Punnett square)   B      b

                      b   Bb     bb

                      b   Bb     bb

F1) 50% of the progeny is heter0zyg0us black, Bb

    50% of the progeny is h0m0zyg0us recessive white, bb

The genotypes of the parents are Bb and bb        

You can learn more about complete dominance at

https://brainly.com/question/9881046

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