【名词&注释】
基因型(genotype)、染色体(chromosome)、合蕊柱(gynostemium)
[单选题]兰科植物的合蕊柱由( )合生而成。
A. 数枚花丝
B. 数个花药
C. 雄蕊和雌蕊
D. 雄蕊与花冠
查看答案&解析
举一反三：
[单选题]百合的学名为Lilium brownii var．viridulum，可见百合是L．brownii的一个( )。
A. 亚种
B. 变种
C. 原变种
D. 变型
[单选题]Young hoatzins are different from their parents in that ．
A. they look like young cuckoos
B. they have claws on the wings
C. they eat a lot like a cow
D. they live on river banks
[单选题]—Why do you want to work for our company?
—This is the job that I for.
A. looked B． am to look
B. had looked
C. have been looking
[单选题]The passage is probably followed by a concluding paragraph about .
A. Zelda’s personal life
B. Zelda’s illness and treatment
C. Fitzgerald’s friendship with Graham
D. Fitzgerald’s contributions to the literary world
[单选题]菊科植物花序外包被着的绿色部分是副萼。( )
A. 正确
B. 错误
[单选题]基因A、a和基因B、b分别位于不同对的同源染色体上，一个亲本与aabb测交，子代基因型为AaBb和Aabb，分离比为1：l，则这个亲本基因型为
A. AABb B．AaBb
B. AAbb D．AaBB
本文链接：https://www.zhukaozhuanjia.com/download/96kqrz.html
