皮皮学，免费搜题
登录
搜题
【单选题】
孟德尔在两对相对性状的研究过程中发现了基因的自由组合定律。下列最能说明基因自由组合定律实质的是( )A.
亲代 2种配子结合产生的F1基因型为YyRr
B.
F1 （ YyRr ） 产生 4种配子，其数量比为1:1:1:1
C.
F1配子随机相遇自由结合而产生F2
D.
F2中出现4种表现型，性状分离比为9:3:3:1
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Which of the following is NOT A social occasion?
A.
Going to church.
B.
Going to work in the office.
C.
Staying at home,
D.
Going to A party.
【单选题】Which of the following is NOT a social occasion?
A.
Going to church.
B.
Going to work in the office.
C.
Going to a party.
D.
Staying at home.
【单选题】43 Which of the following is NOT a social occasion?
A.
Going to church,
B.
Going to work in the office.
C.
Staying at home.
D.
Going to a party,
【简答题】请简要概括巴克一共经历了哪几次转变。
相关题目：