Use the information given here to answer the following questions. Feather color in budgies is determined by two different genes, Y and B, one for pigment on the outside and one for the inside of the feather. YYBB, YyBB, or YYBb is green; yyBB or yyBb is blue; YYbb or Yybb is yellow; and yybb is white. -A blue budgie is crossed with a white budgie. Which of the following results is not possible?
A) green offspring only B) yellow offspring only C) blue offspring only D) green and yellow offspring E) a 9:3:3:1 ratio