现有一种无尾的观赏猫，育种工作者为了选育纯种的无尾猫，让雌雄

更新 2022-09-03
科目生物
题型选择题
难度中等
浏览 397

挑错有奖

现有一种无尾的观赏猫，育种工作者为了选育纯种的无尾猫，让雌雄无尾猫交配得F₁，再从F₁中选择雌雄无尾猫继续交配得F₂，一直交配多代，但发现每一代中总会出现约1/3的有尾猫和2/3的无尾猫。由此不能推断

A．猫尾形的显隐性性状

B．有尾猫只能产生一种类型的配子

C．无尾猫中存在着纯合子

D．无尾猫与有尾猫杂交后代有尾与无尾之比1：1

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