0 two chromosomes (= cell parts that control what an animal or plant is like), one from the father and one from the mother, that come together during meiosis (= cell division that happens as part of reproduction) --
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
Можем да го завършим стъпка по стъпка, колкото и дълъг да е пътят и не може да бъде завършен, колкото и кратък да е пътят, ако дори не маркирате отпечатъка си.