english: But they physically run in opposite directions, which creates a number of complications for your living cells, as you're about to see, most particularly when DNA is being copied.
non_english: Ale ony fyzicky bežia opačným smerom, čo vytvára množstvo komplikácií pre vaše živé bunky, ako za chvíľu uvidíte, najmä keď je DNA kopírovaná.