Red hair is dominant to blond hair. Give the genotypes and phenotypes for the following

  • Thread starter Thread starter Rebecca A
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Rebecca A

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crosses.? a) Pure Red Hair x Pure Blond Hair
b) Heterozygous x Heterozygous
c) Heterzygouse x Blond Hair
d) Recessive x Recessive
 
By pure you mean homozygous right?

a) Phenotyps: All have red hair
Genotypes: 4 Rr

b) Phenotypes: 3 red hair, 1 blonde
Genotypes: 3 Rr, 1 rr

c) Phenotypes: 2 red hair, 2 blonde
Genotypes: 2 Rr, 2rr

d) Phenotypes: 4 blonde
Genotypes: 4 rr

EDIT:
These are the phenotypes and genotypes of the F2 generation, that means it's the ones you saids kids.
 
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