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試卷名稱：109年 - 109 國立清華大學_碩士班考試入學試題_生命科學院甲組：生物學#125877
年份：109年
科目：研究所、轉學考(插大)◆生物學
18. Feather color in budgies is determined by two different genes, Y for pigment on the outside of the feather, and B for pigment on 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. Two blue budgies were crossed. Over the years, they produced 22 offspring, five of which were white. What are the most likely genotypes for the two blue budgies?
(A)yyBB and yyBB
(B)yyBB and yyBb
(C) yyBb and yyBb
(D) yyBb and yybb
