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Dihybrid Genetics

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Page 128 Codominance #2 (cont)<br />

14<br />

C. Complete a Punnett Square and show the genotypic and<br />

phenotypic ratios for a cross between a black and white<br />

chicken and a black chicken.<br />

F B F W<br />

Black and white<br />

x F B F B<br />

black<br />

F B<br />

F W<br />

Genotypic Ratio<br />

F B F B F B F B F W<br />

2 F B F B : 2 F B F W<br />

Phenotypic Ratio<br />

2 black : 2 black and white

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