减数第一次分裂过程中,不可能出现的是        A.同源染色体

 减数第一次分裂过程中,不可能出现的是

       A.同源染色体联会                                   B.同源染色体彼此分离

       C.非同源染色体自由组合                           D.着丝粒分裂

答案

D

相关题目

Fireworks explosions killed many people and injured hundreds more in China as th
Fireworks explosions killed many people and injured hundreds more in China as the 2006 traditional Lunar New Year celebrations led to much disorder as well as joy across the nation.     At a temple
关于力和运动的关系,下列说法正确的是: A.某物体在水平
关于力和运动的关系,下列说法正确的是: A.某物体在水平面向右运动一定受到了水平向右的力                                B.在
I had a friend who visited me from out of town and I wanted to show him the CN
I had a friend who visited me from out of town and I wanted to show him the CN Tower. It was one of the tallest structures on the earth. So I thought it would offer a(n) __21__ sight. We were stand
若平行四边形有三个顶点坐标为(0,0),(0,b),(a,c
若平行四边形有三个顶点坐标为(0,0),(0,b),(a,c)(a、b、c≠0),则第四个顶点的坐标可能为(    )A.(b+2,2a)           
以下省级行政区中,年降水量最多的省和我国夏季平均气温
以下省级行政区中,年降水量最多的省和我国夏季平均气温最低的省分别是( ) A.②①          B.③④            C.②④            D
F是共点力F1和F2的合力,F的大小随两力夹角的增大而     
F是共点力F1和F2的合力,F的大小随两力夹角的增大而         (填“增大”或“减小”);它大小的数值范围是                  。
某生物兴趣小组对某种皮肤遗传病进行了调查,以下说法正
某生物兴趣小组对某种皮肤遗传病进行了调查,以下说法正确的是   ( )。 A.要选择多个基因控制的皮肤遗传病进行调查 B.在调查该皮肤病的发病率
                    ,江入大荒流。(李白《渡荆
                    ,江入大荒流。(李白《渡荆门送别》)