In Yeast,the Gene Phe1 Is on Chromosome 3 and Lys4 $\begin{array}{ll}47 \% & +;+ \\44 \% & \text { phel; lys4 } \\4 \% & \text { phel; }+ \\5 \% & +; \text { lys } 4\end{array}$

Multiple Choice

In yeast,the gene phe1 is on chromosome 3 and lys4 is on chromosome 7.The progeny (spores) from the cross +;+ × phe1;lys4 were:
$\begin{array}{ll}47 \% & +;+ \\44 \% & \text { phel; lys4 } \\4 \% & \text { phel; }+ \\5 \% & +; \text { lys } 4\end{array}$


This results suggests that:

A) a nondisjunction occurred.
B) one parent has a deletion.
C) one parent has an inversion.
D) one parent has a translocation.
E) unequal crossovers occurred.