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【多选题】
下列选项不属于生物变异现象的是A.
公鸡和老鹰的羽毛明显不同
B.
一棵树上所结的果实,在大小、形状、颜色上都有差异
C.
萤火虫绿色,秋季为褐色
D.
蝇在发育过程中,和幼体有显著差异
拍照语音搜题，微信中搜索"皮皮学"使用
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