Answer to Question #220392 in Genetics for stuck

Question #220392

Assuming the allele for black hair (B) is completely dominant to blonde hair (b), construct a Punnett square showing the cross between a homozygous black-haired male and a homozygous blond-haired female. What are the phenotypic ratios for the offspring? What are the genotypic ratios? Are the offspring homozygous or heterozygous?

Expert's answer

b: Bb:Bb: B

= 1:2:1

Offspring are heterozygous

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