You can do it using the sheet change event...
Private Sub Workbook_SheetChange(ByVal Sh As Object, ByVal Target As Range)
If Target.Column = 1 And Target.Value = "Wrong" Then
Application.EnableEvents = False
Target.Offset(0, 1).Value = "Wrong"
Application.EnableEvents = True
End If
End Sub
You'll have to replace the Column= value with whatever column number your first drop down is in and the offset(0,1) needs the 1 changing to however many columns right of the first drop-down your second drop-down is.
Other than that it should be fine, and will ride roughshod over any validation you have on that cell.
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