Both. You can use it as singular or plural.
Answer:
Crossing over is a biological occurrence that happens during meiosis when the paired homologs, or chromosomes of the same type, are lined up. Hope this helps :)
Explanation:
Interphase, prophase, metaphase, anaphase
Well I guess that through all these 3 main elements we can identify the origins of someone and their identity
I mean I think that what is in common amongst these three is that they are identical to the person
It would be b it is doing with the temperature of water.
