A dihybrid testcross is made to determine if genes C and D are linked.The results are shown in the table.
$\begin{array}{|l|c|r|}
\hline \text { Parent genotypes: } & C c D d \times c c d d & \
\hline & C c D d & 222 \
\hline & C c d d & 280 \
\hline \text { Progeny genotypes: } & c c D d & 280 \
\hline & c c d d & 218 \
\hline & & 1000 \
\hline
\end{array}$
-Using the chi-square test for goodness of fit, how many degrees of freedom are in this data set?
A)1
B)2
C)3

Question

A dihybrid testcross is made to determine if genes C and D are linked.The results are shown in the table.
 $\begin{array}{|l|c|r|}
\hline \text { Parent genotypes: } & C c  D d \times c c d d & \
\hline & C c  D d & 222 \
\hline & C c  d d & 280 \
\hline \text { Progeny genotypes: } & c c  D d & 280 \
\hline & c c  d d & 218 \
\hline & & 1000 \
\hline
\end{array}$ 
-Using the chi-square test for goodness of fit, how many degrees of freedom are in this data set?
A)1 
B)2 
C)3

Quizplus · Accepted Answer

The Answer is C

A Dihybrid Testcross Is Made to Determine If Genes C