It is necessary for me ____ what everyone said.(write)
关于如图所示的图象,说法中不正确的是( )
—Do you think I should get a good camera ?—Yes , of course ._______, you also need a good map and comfortable shoes.
蚕豆根尖细胞有含3H标记的胸腺嘧啶氧核苷培养基中完成一个细胞周期,然后在不含放射性标记的培养基中继续分裂至中期,其染色体的放射性标记分布情况是( )