单选题:孟德尔对于遗传学的重要贡献之一是利用设计巧妙的实验否定了融合遗传方式。为了验证孟德尔遗传方式的正确性,有人用一株开红花的 题目分类:生物 题目类型:单选题 查看权限:VIP 题目内容: 孟德尔对于遗传学的重要贡献之一是利用设计巧妙的实验否定了融合遗传方式。为了验证孟德尔遗传方式的正确性,有人用一株开红花的烟草和一株开百花的烟草作为亲本进行实验。在下列预期结果中,支持孟德尔遗传方式而否定融合遗传方式的是 A.红花亲本与百花亲本杂交的F1代全为红花 B.红花亲本与百花亲本杂交的F1代全为粉红花 C.红花亲本与百花亲本杂交的F2代按照一定比例出现花色分离 D.红花亲本杂交,子代全为红花;百花亲本自交,子代全为百花 参考答案: 答案解析:
Which could be the best title for the text? Which could be the best title for the text?A.Improve quality? Serve bette B.Deli 分类:生物 题型:单选题 查看答案
Which of the folling is true accrding to Paragraph? Which of the folling is true accrding to Paragraph?A.She doesn’t like others r p 分类:生物 题型:单选题 查看答案
A.successfulB.helpfulC.tiringD.surprising A.successfulB.helpfulC.tiringD.surprising 分类:生物 题型:单选题 查看答案
—How could you be so rude as to walk in here in the middle o —How could you be so rude as to walk in here in the middle of my class?—________ 分类:生物 题型:单选题 查看答案