①N期有8条染色体 ②L期紧接着P期 ③P期与M期细胞内DNA数量相等
④M期一条染色体包括两条染色单体.
下列叙述中,正确的是( )
—What are those?
—They're ducks.
–No, you _______. You _______ clean it after school.