A.SRY基因与SDX基因是同源染色体上的非等位基因 |
B.可育雌性小鼠的性染色体组成可能为XX或XY |
C.SDX基因突变雄鼠性逆转为雌鼠可能与SDX蛋白无法促进SRY基因的表达有关 |
D.上述性逆转得到的雌鼠与野生型雄鼠杂交,子代小鼠的雌雄比例为1:2 |
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