A:y=﹣(x﹣1)2﹣3
B:y=﹣(x+1)2﹣3
C:y=﹣(x﹣1)2+3
D:y=﹣(x+1)2+3
—_______ have you lived in Binzhou?
—For about ten years.
下列不属于基因突变特点的是( )