A.豌豆在自然状态下是纯种且有易于区分的相对性状,是用来研究遗传规律的理想材料 |
B.选择果蝇作为遗传实验材料的优点之一是果蝇后代数量多,便于统计学分析 |
C.噬菌体侵染细菌实验比肺炎链球菌体外转化实验更有说服力 |
D.豌豆花是一种单性花,所以进行杂交过程中无需去雄 |
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2