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A Dihybrid Test Cross Is Made Between the Genes C

Question 54

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A dihybrid test cross is made between the genes C and D with the following results.Calculate ?2 to test the hypothesis that the C and D genes are unlinked. CcDc×ccddCD222Cd280cD280cd2181000\begin{array}{|l|l|}\hline C c D c \times c c d d & \\\hline C D & 222 \\\hline C d & 280 \\\hline c D & 280 \\\hline c d & 218 \\\hline & 1000 \\\hline\end{array}

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