1.人工诱变的物理方法有
2.若只研究眼色,不考虑其他性状,白眼雌果蝇与红眼雄果蝇杂交,F1雌雄果蝇的表现型及其比例是
3.基因型为ddXaXa和DDXAY的果蝇杂交,F1雌雄果蝇的基因型及其比例是
4.若基因a和b的交换值为5%,现有白眼异常刚毛的雌果蝇与正常雄果蝇杂交得到F1,F1雌果蝇所产生卵细胞的基因型的比例是XAB:XAb:XaB:Xab=
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