Are all DC animated movies connected to each other?

This is my own theory but it's amazing:

THE DARK KNIGHT UNIVERSE

1)BATMAN: YEAR ONE

2)CATWOMAN

3)BATMAN: THE KILLING JOKE

4)BATMAN: UNDER THE RED HOOD

5)THE DARK KNIGHT RETURNS PART I & II

DC ANIMATED UNIVERSE:

SERIES:

1)BATMAN: THE ANIMATED SERIES

2)SUPERMAN: THE ANIMATED SERIES

3)THE NEW BATMAN ADVENTURES

4)STATIC SHOCK

5)BATMAN BEYOND

6)JUSTICE LEAGUE

7)JUSTICE LEAGUE UNLIMITED

MOVIES:

1)BATMAN: MASK OF THE PHANTASM

2)BATMAN & MR. FREEZE: SUBZERO

3)BATMAN: MYSTERY OF THE CATWOMAN

4)BATMAN AND HARLEY QUINN

5)BATMAN BEYOND: RETURN OF THE JOKER

DC ANIMATED MOVIE UNIVERSE:

1)JUSTICE LEAGUE: THE FLASHPOINT PARADOX

2)JUSTICE LEAGUE: WAR

3)SON OF BATMAN

4)JUSTICE LEAGUE: THRONE OF ATLANTIS

5)BATMAN VS ROBIN

6)BATMAN: BAD BLOOD

7)JUSTICE LEAGUE VS TEEN TITANS

9)JUSTICE LEAGUE DARK

10)TEEN TITANS: THE JUDAS CONTRACT

11)CONSTANTINE: CITY OF DEMONS

12)SUCIDE SQUAD: HELL TO PAY

13)THE DEATH OF SUPERMAN

14)THE REIGN OF SUPERMAN

DC LEGION OF SUPERHEROES UNIVERSE:

1)LEGION OF SUPERHEROES S1-2

2)SUPERMAN: UNBOUND


Do the genes of both parents also determine if the child will be a boy or a girl?

It is all dependant upon which type male gamet fuses with egg .Female parent have only one XX sex chromosomes hence the egg carries only X chromosome after meiosis whereas the male male have XY sex chromosome hence producing two types of sperm one with the X and other

How would you make the Justice League movie better?

The Snyder cut. Plain and simple.Regardless of your feelings about Zack Snyder or his work, at least if Joss Whedon didn't get his grubby hands on the movie it would have had a consistent feel to it. And that would have made for a better movie overall.The blame isn't entirely on Whedon of course. It's mostly