1.古代长颈鹿颈有长有短,颈的长短可遗传,而我们现在的长颈鹿都是颈长的,形成颈长的原因是〔 〕A遗传 B变异 C自然选择2.玉米粒的黄色与白色是相对性状,一黄色玉米与一黄色玉米杂交,后代
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/13 00:03:50
![1.古代长颈鹿颈有长有短,颈的长短可遗传,而我们现在的长颈鹿都是颈长的,形成颈长的原因是〔 〕A遗传 B变异 C自然选择2.玉米粒的黄色与白色是相对性状,一黄色玉米与一黄色玉米杂交,后代](/uploads/image/z/3809835-27-5.jpg?t=1.%E5%8F%A4%E4%BB%A3%E9%95%BF%E9%A2%88%E9%B9%BF%E9%A2%88%E6%9C%89%E9%95%BF%E6%9C%89%E7%9F%AD%2C%E9%A2%88%E7%9A%84%E9%95%BF%E7%9F%AD%E5%8F%AF%E9%81%97%E4%BC%A0%2C%E8%80%8C%E6%88%91%E4%BB%AC%E7%8E%B0%E5%9C%A8%E7%9A%84%E9%95%BF%E9%A2%88%E9%B9%BF%E9%83%BD%E6%98%AF%E9%A2%88%E9%95%BF%E7%9A%84%2C%E5%BD%A2%E6%88%90%E9%A2%88%E9%95%BF%E7%9A%84%E5%8E%9F%E5%9B%A0%E6%98%AF%E3%80%94+%E3%80%95A%E9%81%97%E4%BC%A0+B%E5%8F%98%E5%BC%82+C%E8%87%AA%E7%84%B6%E9%80%89%E6%8B%A92.%E7%8E%89%E7%B1%B3%E7%B2%92%E7%9A%84%E9%BB%84%E8%89%B2%E4%B8%8E%E7%99%BD%E8%89%B2%E6%98%AF%E7%9B%B8%E5%AF%B9%E6%80%A7%E7%8A%B6%2C%E4%B8%80%E9%BB%84%E8%89%B2%E7%8E%89%E7%B1%B3%E4%B8%8E%E4%B8%80%E9%BB%84%E8%89%B2%E7%8E%89%E7%B1%B3%E6%9D%82%E4%BA%A4%2C%E5%90%8E%E4%BB%A3)
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