HELP ME PLEASE!!!!!
Shown below are the DNA scans for Frog W, Frog X, Frog Y, and Frog Z. Bands 2–4 control the presence of spots. If Frog Z does NOT have spots, which frogs DO have spots?
A Frogs W and Y
B Frogs W, X, and Y
C Frogs X and Y
D Frog X only