(1)图一中抗虫棉细胞乙可产生
(2)为证明转基因棉花具有抗棉铃虫效果,简要设计一个实验方案并预测结果
(3)棉铃虫的发育方式为
(4)棉花的白色和红色(由B、b基因控制)为一对相对性状。现有两株白色的棉花,分别作为父本和母本进行杂交,结果它们的子代中有的结白色棉花,有的结红色棉花。由此可判断亲代白色棉花基因组成是
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